The cerebrum is a major part of the brain, controlling emotions, hearing, vision, personality and intelligence. It also controls all the voluntary actions.
The functions of pons include sensory roles in hearing, equilibrium and taste, and in facial sensations such as touch and pain, etc.
Hypothalamus is a part of the brain which is important in regulating internal activities like body temperature and release of hormones.
Therefore, the correct answer is ‘cerebrum’.