Explanation: Inappropriate is the antonym of Apt that means appropriate. Bright and disinterested completely go off track while connected could relate with 'apt' up to some extent. Appropriate is something which means correct, exact or applicable implying that something related or connected to the context. Hence, the near-synonym here could be 'connected' as among all the options as the rest of them are completely irrelevant to the meaning of the word 'apt'.