​When People Report How Something Would Look from a Different

Multiple Choice

​When people report how something would look from a different angle,they say they "imagined rotating the object." What evidence did Shepard and Metzler present to support this idea?

A) When people look at unfamiliar objects, their accuracy on this question decreases.
B) ​While people think about the problem, their hands move as if moving something.
C) ​While people think about the problem, their eyes move as if watching something.
D) ​The delay of response is proportional to the angular distance of rotation.