. . . . . . . . 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 indefinite article “a” because we are not introducing the man for the first time.

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.