Which of the following best describes the classification of medicinal substance use?
◦ trying a substance once or perhaps a few times out of curiosity and then not using it again
◦ the use of a substance during social activities with one or more friends
◦ using a substance to relieve an unpleasant emotional state such as sadness, anxiety, stress, or loneliness
◦ when a person has become dependent on regular use of the substance to feel good physically or psychologically