7785. His sententious reply impressed the visitor.

✅ The correct answer is option D.
Sharp : (of an object) having an edge or point that is able to cut or pierce something.

Quick : moving fast or doing something in a short time.

Insipid : lacking flavour; weak or tasteless.

Meaningful : having meaning.

Sententious : given to moralizing in a pompous or affected manner.

Synonym of Sententious is Meaningful