recorded temperature of the river after the dam was built has been 43 degrees.
(D)Nonnative species of fish, introduced into the Emerald River after the dam was built, have begun competing with the declining native fish species for food and space.
(E) Five of the fish species native to the Emerald River are not native to any other river in North America.
5. An advertisement designed to convince readers of the great durability of automobiles manufactured by the Deluxe Motor Car Company cites as evidence the fact that over half of all automobiles built by the company since 1970 are still on the road today, compared to no more than a third for any other manufacturer.
Which of the following, if true, most strongly supports the advertisement's argument?
(A) After taking inflation into account, a new Deluxe automobile costs only slightly more than a new model did in 1970. (B) The number of automobiles built by Deluxe each year has not increased sharply since 1970.
(C) Owners of Deluxe automobiles typically keep their cars well maintained.
(D) Since 1970, Deluxe has made fewer changes in the
automobiles it manufactures than other car companies have made in their automobiles.
(E) Deluxe automobiles have been selling at relatively stable prices in recent years.
6.Six months or so after getting a video recorder, many early buyers apparently lost interest in obtaining videos to watch on it. The trade of businesses selling and renting videos is still buoyant, because the number of homes with video recorders is still growing. But clearly, once the market for video recorders is saturated, businesses distributing videos face hard times. Which of the following, if true, would most seriously weaken the conclusion above?
(A) The market for video recorders would not be considered saturated until there was one in 80 percent of homes. (B) Among the items handled by video distributors are many films specifically produced as video features.
(C) Few of the early buyers of video recorders raised any complaints about performance aspects of the new product. (D) The early buyers of a novel product are always people who are quick to acquire novelties, but also often as quick to tire of them.
(E) In a shrinking market, competition always intensifies and marginal businesses fail.
7.This year the New Hampshire Division of Company X, set a new record for annual sales by that division. This record is especially surprising since the New Hampshire Division has the smallest potential market and the lowest sales of any of Company X's divisions.
Which of the following identifies a flaw in the logical coherence of the statement above?
(A) If overall sales for Company X were sharply reduced, the New Hampshire Division's new sales record is irrelevant to the company's prosperity.
(B) Since the division is competing against its own record, the comparison of its sales record with that of other divisions is irrelevant.
(C) If this is the first year that the New Hampshire Division has been last in sales among Company X's divisions, the new record is not surprising at all.
(D) If overall sales for Company X were greater than usual, it is not urprising that the New Hampshire Division was last in sales. (E) Since the New Hampshire Division has the smallest potential market, it is not surprising that it had the lowest sales.
8.The average normal infant born in the United States weighs between twelve and fourteen pounds at the age of three months. Therefore, if a three-month-old child weighs only ten pounds, its weight gain has been below the United States average.Which of the following indicates a flaw in the reasoning above?
(A) Weight is only one measure of normal infant development. (B) Some three-month-old children weigh as much as seventeen pounds.
(C) It is possible for a normal child to weigh ten pounds at birth. (D) The phrase below average does not necessarily mean insufficient.
(E)Average weight gain is not the same as average weight. 9.Politician:Fewer people are entering the labor market now than previously. If the economy grows,the demand for motivated and eduated people will far ou-tstrip thr supply. Some companies have already started to respond to this lab-or-maket situation by finding better ways to keep their current employee. Their concern is a sure indicator that the economy is growing.
Which of the following is the best criticism of the politician's reasoning?
(A)The fact that companies are making prudent preparations for a possible future development does not mean that this development is aleady taking place.
(B) The fact that some companies now try harder to keep their employee does not mean that they used to be indifferent to employee morale.
(C) The fact that demand will outstrip supply does not mean that there will be no supply at all.
10.Because postage rates are rising, Home Decorator magazine plans to maximize its profits by reducing by one half the number of issues it publishes each year.The quality of articles, the number of articles published per year, and the subscription price will not change. Market research shows that neither subscribers nor advertisers will be lost if the magazine's plan is instituted.
Which of the following, if true, provides the strongest evidence that the magazine's profits are likely to decline if the plan is instituted?
(A) With the new postage rates, a typical issue under the proposed plan would cost about one-third more to mail than a typical current issue would.
(B) The majority of the magazine's subscribers are less