James has a job analyzing page layouts. He often needs to measure the sizes of letters printed on a page. Which of the following units would likely make James’s measurements easiest to read?

Letters printed on a page are small, so a small unit makes their dimensions easier to measure clearly. Millimeters are much smaller than inches and allow precise measurements without using awkward fractions. Therefore, millimeters is the best choice.

AI-written and checked against the verified answer.