
Passage: From the "Achilles Monkey", the researchers found many characteristics of the great ape. For example, a bone on its heel is short and wide. In addition, the Achilles monkey has a small eye socket, which scientists speculate that it, like the ancestors of early apes, was active during the day.
Question: Which of the followings, if true, can best support the above scientists' conjecture?
A. A.The short and wide hind bones make this primate good at jumping and preying in the bushes
B. B.There is no strict proportional relationship between animal vision and orbital size
C. C.The earliest apes were separated from other primates at least 55 million years ago
D. D.Animals that are mainly nocturnal have larger eyes
Answer: