Date me plz =( im 13 and a straight boy

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.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

What substance has a mass of 9.5g and volume of 2.1cm^3