GMAT Sentence Correction (SC) | Re: The type of behavior exhibited when an animal recognizes itself in a m

[quote="AbdurRakib"] The type of behavior exhibited when an animal recognizes itself in a mirror comes within the domainof “theory of mind,” thus is best studied as part of the field of animal cognition.
A.of “theory of mind,” thus is best
B.“theory of mind,” and so is best to be
C.of a “theory of mind,” thus it is best
D.of “theory of mind” and thus is best
E.of the “theory of mind,” and so it is best to be

in B and E.

this behaviour is best to be studied as part of
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