Concept:To
hit the nail on the head means to say something exactly right, to describe a situation or problem precisely.
Solution:Yaaba said that the only way to succeed is through hard work.
The idiom tells us that her statement was exactly correct, so she
told us the truth.
A. "was a good hairdresser" plays on the word "head", taking the idiom literally.
C. "tried to deceive us" is the opposite of saying something exactly right.
D. "showed that she disliked us" treats "hit" as unfriendly, which is not the meaning.
Key point: Hitting a nail exactly on its head drives it in perfectly; in speech it means being exactly right.
Answer:Option B (told us the truth)