If a formal parameter is a nonconstant reference parameter, during a function call, its corresponding actual parameter must be a(n) .

A variable

Explanation: variable is defined as anything whose quantity or quality that varies. If the researcher i

interested in a variable, it is called The dependent variable. An independent variable is believed to affect the dependent variable. Confounding variables are said to be interference caused by another variable.

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.