Vegita
GMATNinjaWith the correct option C:
By using a process called echolocation to analyze the echoes of the high-pitched sounds they produce, bats
can determine not only the distance to an object but also its shape and size and the direction in which
it is moving.
Can you please tell me what the last 'it' refers to? If I were to refer to the object, then it doesn't make sense to say the object is moving. In addition to that bats is a plural noun so 'it' can't refer to bats.
Sorry for missing this question earlier! In case it's still helpful to you or anyone else...
Yes, "it" refers to "object," and the object certainly can be moving!
Just imagine a bat tracking down a nice, juicy mosquito. The bat would use echolocation to determine how far away the mosquito is (at any given moment) and the direction in which the mosquito is moving (again, at a given moment). That information obviously changes moment to moment, but there's no reason to think that the bat can't receive and process the ever-changing data.
I hope that helps!