|Question 6Verbal

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Text
Sheep and falcons can see in three dimensions (3D), which helps them perceive distance and depth. Octopuses and squid are thought to lack 3D vision. Many researchers once thought the same about cuttlefish, but Trevor Wardill and his team wanted to test whether this assumption was true. The team studied how cuttlefish wearing 3D glasses reacted to 3D images of shrimp (a favorite prey) projected on a tank wall. Cuttlefish changed their striking position to match the 3D images, suggesting that their vision is more like that of sheep and falcons than that of octopuses or squid.
Which choice best states the function of the underlined sentence in the text as a whole?
It explains how 3D vision in sheep and falcons differs from the type of 3D vision discussed in the text.
A
It explains why the animals discussed in the text were once thought to lack 3D vision.
B
It offers a suggestion for future research on the aspect of 3D vision discussed in the text.
C
It presents the results of the study of 3D vision discussed in the text.
D