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.