Correct option is A
The correct answer is (a) To do or say something exactly right
The idiom "Hit the nail on the head" means to do or say something that is precisely correct or accurate, often in identifying a problem or making a point.
Example:
"When she said the company needed better communication, she really hit the nail on the head."
Additional Information:
To persuade someone: Incorrect because the idiom does not involve persuasion.
To misguide someone: Incorrect because the idiom implies accuracy, not misguidance.
To get the expected result: Incorrect because while the idiom indicates correctness, it does not specifically imply achieving a result.