The correct option is A indigence
Affluence means the state of having a great deal of money; wealth. The opposite of affluence is a state of extreme poverty, or indigence. Hence, Option B is correct. Among the rest of the options, sorrow means a feeling of deep distress caused by loss, disappointment, or other misfortune suffered by oneself or others, exuberance means the quality of being full of energy, excitement, and cheerfulness, opulence means great wealth or luxuriousness. These options do not express this antonym, hence incorrect.