Physiology In humans, the brain is considered to be “responsive”: A It has control centers for all motor actions and sensory inputs B Every cell of brain has got specific function C It is a closed system and so not influenced by changes occurring outside D Its functions are profoundly affected by changes in external environment 💡 Explanation In humans, the brain is considered to be "responsive": ✓ Correct Answer: D. Its functions are profoundly affected by changes in external environment