Answer:
Central nervous system depressants are medications or substances that slow brain activity, making them useful for treating anxiety, panic, and sleep disorders..
Explanation:
There are instances
that when we are exposed to virus or bacteria, the antigen A in our body try to
fight but still we get sick, take some medication and we are then healed. Then,
another exposure to a new virus or bacteria, the antigen B reacts weakly for
our immune system do not recognized the foreign pathogen that invade the body
resulting to slight sore throat after visiting your sister at school.
Each one can affect mental health. All of the above is correct answer.
