The correct option is B Hypothalamus
The part of the brain which controls hunger is the hypothalamus which forms ventral part of the diencephalon. It is responsible for the production of hormones that govern thirst, hunger, sleep and mood. Medulla oblongata regulates breathing, heart and blood vessel function. Midbrain controls motor movements, particular movements of the eye, and auditory and visual processing. The cerebrum is associated with higher brain functions like thought and actions.