Fill in the blank (proverb completion) “A stone that goes on rolling ______ no moss.” Choose the correct verb to complete the well-known proverb.

Given data

• Standard English proverb about restlessness and accumulation.

Concept/Approach
The fixed proverb is “A rolling stone gathers no moss.”

Option analysis
gathers — correct set phrase.collects/assembles/produces — not the established wording.

Final Answer
gathers