The correct option is D Valium
Valium (diazepam) is a member of benzodiazepine drugs which act on the brain and nerves (central nervous system) to produce a calming effect. It is used to relieve anxiety and nervousness. After taking a valium, a person feels calmness, relaxation, and drowsiness. It is also used to relieve muscle spasms and to provide sedation before medical procedures. It works by enhancing the effects of a certain natural chemical in the body (GABA). Hence, the correct answer is option D.