7245. Before I could expostulate he had spoken again.

✅ The correct answer is option B.
Postulate suggest or assume the existence, fact, or truth of (something) as a basis for reasoning, discussion, or belief.

Protest : a statement or action expressing disapproval of or objection to something.

Explain : make (an idea or situation) clear to someone by describing it in more detail or revealing relevant facts.

Disclose : make (secret or new information) known.

Expostulate : express strong disapproval or disagreement.

Synonym of Expostulate is Protest