In one of the practice tests, I got the following CR question.
In the past year, there has been a dramatic increase in the number of people killed by alligators in Florida. During this same time, there has been an increase in the development of new houses, golf courses, and shopping areas in former wilderness areas within the state. Therefore, the increase in fatal alligator attacks must have been caused by the increase in the number of humans living in the alligator’s habitat.
Which of the following, if true, most seriously calls into question the explanation above?
1) Two years ago, a government initiative to reduce the alligator population size by destroying alligator eggs ended.
2) An increase in fatal alligator attacks tends to make people more cautious around lakes, ponds, swamps and canals.
3) The number of people killed by snake bites, spider bites and scorpion stings in Florida has held steady for many years.
4)Many of the new state residents have moved to newly constructed areas near water that is suitable for habitation by alligators.
5) The undeveloped areas of Florida have decreased in area by 5% in the past year.
The answer provided is 1) because "This statement properly identifies an alternative rationale (there are more alligators now) and undermines the given explanation."
I take issue with this answer because common sense (and not necessarily outside knowledge) would tell you that a two or one year old alligator could not kill a person. It is highly unlikely that juveniles of any species could be capable of killing even an infant. Thus, more one year old alligators running around would not sufficiently contribute to lethal attacks. Maybe 10 years later, or some more reasonable margin of time, but as it stands this answer is bogus.
I'm not going to propose one of the other answers here, I just think you Manhattan should make the correct answer actually make sense.