I just took a test in school today. What question was I asked?

Question I was asked: Why should plants be included in investigations about the water cycle?

I just took a test in school today. What question was I asked?

Question I was asked: What chemical symbol represents the element iron?

I just took a test in school today. What question was I asked?

Question I was asked:
Which correctly arranges three scientific terms-theory, law, and hypothesis-from least to most accepted or tested?