Consider the following statements about human brain:1.The brain is responsible for regulating the heart beat.2.It is responsible for balancing the body.Select the correct answer using the codes given below.

1. A

   Only 1 is correct

   Only 1 would drop the cerebellum’s role in posture and balance. The brain does regulate heartbeat through the medulla’s cardiac centres, but statement 2 is also correct, so ‘only 1’ is incomplete.

2. B

   Only 2 is correct

   Only 2 would ignore autonomic control of the heart. Medullary cardiac and vasomotor centres change rate and force; the heart is not left solely to its own pacemaker without brain influence.

3. C

   1 and 2 both are correct

   Both statements are correct. The medulla oblongata houses cardiac centres that regulate heartbeat, and the cerebellum (with vestibular input) is responsible for balancing the body. That is why (c) is the official key.

4. D

   Neither 1 nor 2 is correct

   Neither 1 nor 2 would deny two standard NCERT-level functions of the human brain. Both limbs stand.

Summary. Official key is (c). The brain’s medulla regulates heartbeat via cardiac centres, while the cerebellum maintains equilibrium and posture. The item is a both-correct pair, not a single-function trap. Honour the stored letter (c).