Question

What sort of person was the man?​

Answer 1

Explanation:

The latter is correct - Because , when you ask a person this sort of 'a question' its not implying a general ( or so to say, generic ) query , which in turn makes you know that men are usually of single known identity , i.e there are no Supermen, Inferiormen which would have been a known-to-all categorization of men, which could have been an answer to the first question.

It's a simple knowledge of picking out the person based on his attributes , from a species which you belong to too, and hence 'a man' gets differentiated from all other 'man's , or , men.Hence the latter choice.