In scientific inquiry, a stated possible explanation is called/a. a law/b. an observation/c. a theory/d. a hypothesis

I believe the answer is: a. hypothesis

Hypothesis is the initial explanation for a certain occurrence that made through observations only , without being backed by the data from research. The purpose of experiments that by the scientists is to find out whether the initial hypothesis that they have is correct or not.

there are treatment options for depression (mdd) that may work for you. one way of treating depression may be to affect the levels of certain chemicals that brain cells use to communicate, called neurotransmitters. scientists believe that certain neurotransmitters may be out of balance in depression.

although the exact way depression medications shown to ease overall depression symptoms in some people work is unknown, scientists think that some medications work by affecting the levels of a neurotransmitter called serotonin in the brain. other treatments work by affecting the levels of other neurotransmitters like norepinephrine or dopamine.