The correct answer is D. natural.
Affectation is a false show of emotion or behavior. It is often used to impress others or to gain an advantage. Natural, on the other hand, is genuine and sincere. It is not affected
or contrived.The other options are not antonyms of affectation.
Love is an intense feeling of deep affection. It is not necessarily false or insincere.
Good is a positive quality that is associated with being kind, helpful, and virtuous. It is not necessarily false or insincere.
Likeable is a quality that makes someone pleasant to be around. It is not necessarily false or insincere.