Final answer:
A drug that affects brain activity associated with mental processes and behaviors is a psychotropic drug. Psychoactive drugs are substances that change the function of the brain and result in alterations of mood, thinking, perception, and/or behavior.
Step-by-step explanation:
A drug that affects brain activity associated with mental processes and behaviors is a psychotropic drug. Psychoactive drugs are substances that change the function of the brain and result in alterations of mood, thinking, perception, and/or behavior.
They can include prescription medications such as opioid painkillers, legal substances such as nicotine and alcohol, and illegal drugs such as LSD and heroin.