'Perceive them' would replace the highlighted phrase 'perceives them' because plural verb should be used with plural noun 'minds' but 'perceives' is a singular verb and the same reason can help in eliminating option (d). Option (b) can be eliminated because pronoun 'it' is used to refer to a singular noun but 'conversations' is a plural noun. Option (c) can also be eliminated because pronoun 'they' is used as the subject of the sentence while the pronoun 'them' is apt to use here, as the object of the sentence.
Hence, option (a) is correct.
Study Notes
Category
