Free Digital SAT Reading and Writing Test 6

Digital SAT Reading and Writing Test 6 Question 1

Mammals with a neocortex, a part of the brain associated with higher cognitive functions, can recognize a shared feature between different objects. Anna Smirnova and her colleagues tested whether this ability is also present in crows, which do not have a neocortex, by first showing the crows a card with two same-sized circles and then letting them choose between a card with two same-sized squares and another with two different-sized squares. They found that the crows repeatedly chose the card with the same-sized squares over the other, suggesting that ____

Which choice most logically completes the text?

younger crows are better at recognizing a shared feature between objects than older crows.
researchers can assume that the ability to recognize a shared feature between different objects is exclusively due to the presence of a neocortex.
it is more difficult for animals without a neocortex to recognize a shared feature between different objects than it is for animals with a neocortex.
researchers should not assume that the ability to recognize a shared feature between different objects is necessarily dependent on having a neocortex.

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