The word “cumulative” means that something builds on itself. Which example best shows how scientific knowledge is cumulative?

The cumulative idea is that later scientific work builds on earlier work. Choice B appears intended to show this, but it reverses the historical order: Kepler developed his laws before Newton, and Newton used Kepler’s work when developing his law of gravity. So B fits the concept only if the names are reversed; as written, none of the choices is fully accurate.

AI-written and checked against the verified answer.