Solve this multiple-choice question and choose the correct option.

English grammar error-spotting (numerals, rate expression, and comparison clause; pick the single wrong segment or choose ‘‘No error’’): ‘‘A small baby breathes about / 45 times per minute while / a child of about six years breathes about 25 times per minute. / No error.’

Difficulty: Easy

A small baby breathes about
45 times per minute while
a child of about six years breathes about 25 times per minute.
No error.

Correct Answer: No error.

Explanation:

Grammar checkAll parts are correct: present simple for general truths, ‘‘times per minute’’ is the standard rate expression, and the ‘‘while’’ clause makes a natural comparison. No correction needed.

Common pitfalls

Replacing ‘‘per’’ with ‘‘in’’ in rate expressions (nonstandard here).

English grammar error-spotting (numerals, rate expression, and comparison clause; pick the single wrong segment or choose ‘‘No error’’): ‘‘A small baby breathes about / 45 times per minute while / a child of about six years breathes about 25 times per minute. / No error.’

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