Question

The search engine’s business model __________ around the fulcrum of trust.

• A. revolves
• B. plays
• C. sinks
• D. bursts

Hint:

In English usage questions, look for clues in nearby words. Phrases like {“around the fulcrum”} strongly suggest verbs such as {revolves} or {centers}.

Answer 1

The Correct Option is A

Step 1: Understand the sentence structure. 
The sentence is: “The search engine’s business model ______ around the fulcrum of trust.” 
The phrase “around the fulcrum” suggests rotation or central dependence. 
Step 2: Analyze the meaning of each option. 
(A) revolves: This verb correctly conveys the idea of something being centered on or dependent upon a key point. 
(B) plays: Grammatically and semantically incorrect in this context. 
(C) sinks: Does not fit the meaning or sentence construction. 
(D) bursts: Incorrect and does not convey the intended idea. 
Step 3: Choose the best fit. 
The word “revolves” correctly completes the sentence both grammatically and contextually. 
Step 4: Conclusion. 
The correct sentence is: \[ \text{The search engine’s business model revolves around the fulcrum of trust.} \]