The correct answer is A. amicable.
Amicable means friendly and pleasant. It is a person who is easy to get along with and who is always willing to help others.
Benevolent means kind and generous. It is a person who is always willing to do good for others, even if it means sacrificing their own time or money.
Morbid means having or showing an interest in unpleasant subjects, especially death and disease. It is a person who is always thinking about death and disease, and who is not afraid to talk about them.
Dissonant means not in harmony or agreement. It is a person who is always arguing with others, and who is never happy with the way things are.
Amicable is the best choice because it is the most positive and helpful of the four options.