I have no idea what to do, I'm so confused. I REALLY NEED HELP!

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?