CR Question

[Man_of_Honour]

In 1960’s studies of rats, scientists found that crowding increases the number of attacks among the animals significantly. But in recent experiments in which rhesus monkeys were placed in crowded conditions, although there was an increase in instances of “coping” behavior—such as submissive gestures and avoidance of dominant individuals—attacks did not become any more frequent. Therefore it is not likely that,for any species of monkey, crowding increases aggression as significantly as was seen in rats.Which of the following, if true, most strengthens the argument?

A. All the observed forms of coping behavior can be found among rhesus monkeys living in uncrowded conditions.
B. In the studies of rats, nondominant individuals were found to increasingly avoid dominant individuals when the animals were in crowded conditions.
C. Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do.
D. Some individual monkeys in the experiment were involved in significantly more attacks than the other monkeys were.
E. Some of the coping behavior displayed by rhesus monkeys is similar to behavior rhesus monkeys use to bring to an end an attack that has begun.

The answer is C

[Man_of_Honour]

Kindly share ur reasoning for the answer 'C' .

Originally Posted by Man_of_Honour

In 1960’s studies of rats, scientists found that crowding increases the number of attacks among the animals significantly. But in recent experiments in which rhesus monkeys were placed in crowded conditions, although there was an increase in instances of “coping” behavior—such as submissive gestures and avoidance of dominant individuals—attacks did not become any more frequent. Therefore it is not likely that,for any species of monkey, crowding increases aggression as significantly as was seen in rats.Which of the following, if true, most strengthens the argument?

A. All the observed forms of coping behavior can be found among rhesus monkeys living in uncrowded conditions.
B. In the studies of rats, nondominant individuals were found to increasingly avoid dominant individuals when the animals were in crowded conditions.
C. Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do.
D. Some individual monkeys in the experiment were involved in significantly more attacks than the other monkeys were.
E. Some of the coping behavior displayed by rhesus monkeys is similar to behavior rhesus monkeys use to bring to an end an attack that has begun.

Check out the underlined portion above - and pay particular attention to the text in red. The study had to do with the Rhesus Monkey - one of [presumably] many different species of monkey. So, in order to validate the finding that "...it is not likely that, for any species of monkey, crowding increases aggression as significantly as was seen in rats," we have to find something that tells us what Rhesus Monkeys are like in comparison with all other species of Monkey.

C tells us that Rhesus monkeys 'respond with aggression to a wider range of stimuli than any other monkeys do.' This means that the rhesus is more likely to be aggressive than all other types of monkeys. So if the rhesus monkeys weren't aggressive (which we see from the experiment), then we can conclude that crowding does not increase aggression with monkeys to the degree it does with rats.