The correct sentence which makes use of a PREDICATE NOMINATIVE is option "A": <em>It is </em><em>them and me in the picture.</em>
A predicate nominative may be a noun or a pronoun that completes the linking verb and renames the subject. We consider the following verbs as linking verbs: the verb to be in all its forms (am, is, are, was, were, be, being, and been) and the sense verbs (taste, smell, sound, look, feel...).
It's asking you how your reading selection has effected you. did they make you better writer? did you become more perceptive to detail? stuff like that. basically how reading effects you