dolphins

neoreaves wrote:Sometimes when their trainer gives the hand signal for "Do something creative together" two dolphins circle a pool in tandem and then leap through the air simultaneously. On the other occasions, the same signal elicits synchronized backward swims or tail-waving. These behaviors are not simply learned responses to a given stimulus. Rather, dolphins are capable of higher cognitive functions that may include the use of language and forethought.

　　Which one of the following, if true, most strengthens the argument?

　　(A) Mammals have some resemblance to one another with respect to bodily function and brain structure. - Out of scope

　　(B) The dolphins often exhibit complex new responses to the hand signal. I was looking for the answer something like this. Passage talks about two actions, if we show some more actions or some complex actions then we can provide support to the conclusion. B does the same. Therefore, B is the answer


　　(C) the dolphins are given food incentives as part of their training. - Out of scope

　　(D) Dolphins do not interact with humans the way they interact with one another. - This is obvious elimination, we know dolphin is an animal and it does not interact with human being.

　　(E) Some of the behaviors mentioned are exhibited by dolphins in their natural habitat - This option actually weakens the conclusion. If these behaviors are natural then dolphins don't have any cognitive ability.

tpr-becky wrote: e) but this doesn't tell us whether they are thinking about the behaviours or not.

Therefore B is the best answer.