The search engine’s business model ____ around the fulcrum of trust.
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Answer: A
The correct option is A.
Explanation:
The sentence uses the metaphor of a fulcrum, which is the pivot point about which a lever turns or balances.
- Revolves: To move in a circular orbit or spin around a central point. Saying a business model "revolves around the fulcrum of trust" is idiomatic and logically sound, meaning trust is the central point on which the entire business model depends and turns.
- Plays: Does not fit grammatically or metaphorically with "around the fulcrum".
- Sinks: Implies falling or submerging, which does not align with the concept of a pivot or fulcrum.
- Bursts: Means to break open suddenly, which is contextually irrelevant.
Thus, revolves is the most appropriate word to complete the sentence.
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