Question

In general, what is drug use?

Answer 1

Drug use would be defined as the consumption of legal and illegal drugs. so the correct option is 
The consumption of legal and illegal drugs.
Legal drugs are those prescribed by a doctor to treat an illness or disease. Illegal drugs are often obtained from a dealer and are not permitted to be used.
Explanation:
The distinction Between an illegal and a drug. Legal medicine will either be bought over-the-counter or with a prescription from a medical doctor. illegal medicine cannot de jure be factory-made, bought or oversubscribed. illegal medicine embrace pharmaceutical that is perilously changed and substances that are measured illegal by law. All medicine has the potential to break our health, as a result of they alter chemical processes within the body. habit-forming recreational medicine could injure our health indirectly by reducing the quantity of cash accessible to shop for food, and by inserting users into dangerous things.

Answer 2

Drug use would be defined as the consumption of legal and illegal drugs. Legal drugs are those prescribed by a doctor to treat an illness or disease. Illegal drugs are often obtained from a dealer and are not permitted to be used.