Correct option is D
Option (d) is the correct meaning of the given idiom.
Idiom: Hit the nail on the head
Meaning: To describe exactly what is causing a situation or to say or do something that is precisely correct.
Example: When she said the project failed due to lack of planning, she hit the nail on the head.
Other related idioms and their meanings:
· “On point” – exactly right or appropriate.
· “Right on the money” – precisely correct.
· “Spot on” – completely accurate.