List three ways someone can tell if a friend is using LSD.

Explanation:

Hallucinations are common for someone on acid. Someone who is using LSD may report seeing things that are not there, hearing things that are not producing sound, or smelling things that are not producing any odor. The person may also see things with their eyes closed. (this is your answer)

answer; /// i believe that the correct answer is (c); ///when the lungs expand, they fill with air from the atmosphere;