In the following sentence:
I asked her what her problem was, but she -------------------- quiet
The answer "remained quiet" was marked wrong and the correct answer was given as "kept quiet".
No reason was provided in the answer key.
Can you let me know why the use of remained quiet is wrong and why kept quiet should be used?
Searching on the net indicates the use of "remained silent" in sentences but could not find any references that indicate the use of "remained quiet" in a sentence is wrong