For a B.Tech in Civil Engineering (bachelor) candidate applying for AFCAT, the correct option is Graduate Option D .

Explanation:

AFCAT eligibility:

AFCAT requires a Bachelor's degree in any discipline (or B.Tech) from a recognized university with a minimum of 60% marks.

Engineering Graduates:

Engineers (B.Tech) are specifically mentioned as eligible under a graduate category, which is option D according to Quora.

Civil Engineering:

Since Civil Engineering is a B.Tech degree, it falls under the engineering graduate category, thus making option D the correct choice.

Option D:

Option D is specifically designed for engineering graduates. It allows you to mention your degree and specify your engineering discipline (Civil Engineering).