6275. This was his maiden performance on the stage and he did very well.

✅ The correct answer is option B.
Primary : of chief importance; principal.

First : coming before all others in time or order; earliest; 1st.

Opening : a space or gap that allows passage or access.

Girlish : of or characteristic of a girl.

Maiden : being or involving the first attempt or act of its kind.

Synonym of Maiden is First