The correct answer among the choices given is the last option. Hallucinogens are naturally-occurring or synthetically-produced drugs that can cause hallucinations. Common types of this drug are psychedelics, deliriants and dissociatives. LSD is one of the most powerful mood-changing chemical available. It causes hallucinations, sensations and images that may seem real but actually not.
True, it will stretch your neck, spine and chest. Also if you look up "bridge pose" and try it yourself you can actually figure out what it stretches if you wanted :)
