The Politician is a fluent speaker.

Analyze the question: The underlined word is fluent, in "The politician is a fluent speaker." We need the option closest in meaning.

Explain the concept: Fluent describes someone who speaks smoothly, easily and without hesitation. Eloquent describes someone who speaks expressively and with well-flowing, articulate language. The two words are closely related in meaning.

Solution, checking each option:

• A. an eloquent: This means speaking smoothly, expressively and articulately. It is the closest match to fluent.
• B. a superficial: This means shallow or lacking depth. It has nothing to do with smoothness of speech.
• C. an insightful: This means showing deep understanding. It describes the quality of ideas, not how smoothly someone speaks.
• D. a persuasive: This means able to convince others. A fluent speaker may be persuasive, but fluency itself is about ease of speech, not about convincing people.

Answer: The best match is A. an eloquent (speaker).

Tip: In "nearest in meaning" questions, ask what the word describes. Fluent describes how smoothly someone speaks, and eloquent is the option that describes the same thing. Be careful with distractors like persuasive, which describe the effect on the listener rather than the manner of speaking.