Which of the following is a dissociative drug that can affect a user's sense of control?

PCP, or Phencyclidine, is classified as a dissociative drug, which means it can lead to feelings of detachment from the body and the environment. Its effects on perception and mood often result in a distortion of reality, making users feel disconnected and potentially losing control over their sensory inputs and motor functions. This disconnect can manifest in various ways, such as altered perceptions of time and space, as well as a diminished ability to respond to one’s surroundings effectively.

The other substances listed, while they may alter perception and consciousness, fall into different categories. LSD and mushrooms are primarily hallucinogens, inducing vivid visual and auditory hallucinations along with intense emotional experiences, but they do not typically cause the same level of dissociation or lack of control characteristic of PCP. Ketamine is also a dissociative anesthetic, but PCP is more widely associated with significant impairment in control and bodily awareness in users. Thus, when considering dissociative effects specifically, PCP stands out as a significant factor in the loss of control.