To a greater extent than other drugs, the effects of depend on the specific personality and mental state of the user. a. stimulantsb. depressantsc. hallucinogensd. antihistamines

The correct answer is hallucinogens. Stimulants and depressants affect the mood of the person regardless of his personality and thoughts. Antihistamines, usually the first generation antihistamines, cause drowsiness to a person regardless of the personality. A person that took hallucinogens, the effects of the drug is dependent on the personality and the ongoing thoughts of the patient as sensory hallucinations are often based on the person's ongoing thought processes and dysregulating it in the brain.