You are presented with the quiz "What is a tape measure used for?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "atape measure is used to measure length" and "length is how long something is". So, what's the best answer to the question?

(A). in the frog family; (B). how long something is; (C). Males and females; (D). how dense something is; (E). the texture of something; (F). how much liquid there is; (G). objects that have mass; (H). lowered energy cost;
Answer:
(B).