The man’s nervousness depicted that it was the first speech delivered by him.

The correct answer is C. Maiden.

A maiden speech is the first speech delivered by a person. It is often a nervous experience, as the speaker is trying to make a good impression and establish themselves as a credible authority on the topic. The man’s nervousness in the question suggests that he is giving his maiden speech.

The other options are incorrect. A matin is a morning prayer or service. A peroration is the concluding part of a speech. A platitude is a trite or unoriginal statement.