. . . . . . . . idea of helping . . . . . . . . man was unpleasant in itself. A. no article, the B. the, the C. the, a D. no article, no article

The correct answer is: A. no article, the

The idea of helping the man was unpleasant in itself.

The man is not specific, so we do not use the definite article “the”. We also do not use

The sentence could be rephrased as:

Helping the man was unpleasant in itself.

The man is not specific, so we do not need to use an article.