The compound that causes general antidepressant action on the central nervous system belongs to the class of:

The correct option is B tranquilizers
Analgesics provide relief from pain. Tranquilizers are the compounds that cause general antidepressant action on the central nervous system. Antihistamines are drugs, that inhibit the action of histamine in the body by blocking the receptors of histamine. Analgesics help to relieve pain.

Hence, option B is the right answer.