The search engine's business model ____ around the fulcrum of trust.
A. revolves B. plays C. sinks D. bursts
GATE 2019 · General Aptitude · Most Appropriate Word · medium
Answer: The correct answer is A. revolves — 'The search engine's business model revolves around the fulcrum of trust.'
Understand the metaphor: A fulcrum is a pivot point. The sentence says the business model [verb] around this pivot. Physically, objects 'revolve' around a pivot — so 'revolves around' is the natural fit.
Eliminate distractors: 'Plays around' means to toy with something casually (negative connotation). 'Sinks around' and 'bursts around' are not standard English phrases. Only 'revolves around' is idiomatic and conveys that trust is the central pivot of the business model.