The correct option is A selfish
Altruistic means showing a disinterested and selfless concern for the well-being of others; unselfish. The opposite of altruistic is lacking consideration for other people; concerned chiefly with one's own personal profit or pleasure. Hence, Option D is correct. Among the rest of the options, wicked means evil or morally wrong, brutal means savagely violent, inhuman means lacking human qualities of compassion and mercy; cruel and barbaric. These do not express this antonym, hence incorrect.