Cognitive impairment

Which of the following statements correctly describes cognitive impairment?

Loss of higher intellectual function.
Loss of the power of memory.
Loss of the power of speech.
Loss of higher reasoning ability.

✅ Loss of higher intellectual function.

Explanation:
Cognitive impairment refers to a decline in a person’s ability to think, reason, remember, and make decisions. It involves the loss of higher intellectual functions, such as problem-solving, judgment, and comprehension — not just memory or speech alone.