Fill in the blank with the most appropriate word.
"Can you help me?" She wondered if __________.
The two ways of relating what a person has said are 1)direct and 2)indirect (reported).
In the direct speech, the exact words of the original speaker are repeated.
In the indirect speech (reported speech), the exact meaning of what the speaker told is expressed but not necessarily in the speaker’s exact words.
Option C is correct as the question in the inverted commas is in the simple present tense and 'could' is used with the first form of 'help'.
Options A, B, and D are wrong as 'could' should be used in the place of 'can', she is asking for help (not the listener of the question), and 'you' (the speaker of the reported speech) didn't ask for help (it was she who wanted to be helped) respectively.
The correct answer is C)I could help her.