Spam with the EEE meme lol

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.

Can someone me with questions 12 and 13 plz.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.