Question

What is meant by a hypothesis?
a. a natural phenomenon that requires explanation
b. an explanation for a phenomenon that makes a prediction
c. a tentative understanding of a natural phenomenon
d. a pseudoscientific idea
e. a historical theory that has been proved inaccurate?

Answer 1

A. A natural phenomenon that requires explanation

Answer 2

I would also say the answer is:

a. a natural phenomenon that requires explanation

Hope that helps :P