Adrug user who may feel several different emotions at once or swing rapidly from one emotion to another is probably under the influence of a: a: narcotic b: depressants c: hallucinogen

The correct answer for above statement is:

Under the control of hallucinogens, people see pictures, hear sounds, and feel feelings that look real but do not survive. Some hallucinogens also provide rapid, extreme emotional swings. One of the most effective mood-changing chemicals, LSD, was created in 1938 and is constructed from lysergic acid, which is found in ergot, a fungus that develops on rye and different fabrics.