The best answer would be (A) Paranoia and hallucinations can occur.
Researchers have found that people who smoke marijuana are more likely to have hallucinatory experiences and paranoid feelings than those who don’t. <u>This is due to a psychoactive ingredient in marijuana called THC (tetrahydrocannabinol)</u> which influences a person’s cognition to exhibit these behaviors.
In a study, the independent variable is the thing that you change to see how the change produces different results. In this study, the independent variable would be the use of nicotine.
