The answer is D, "for two weeks". It can be assumed that the word "weeks" applies to a period of time.
Answer A does not specify the number of weeks
Answer B is actually less concise
Answer C is more roundabout than the original statement.
I think the answer is D. to help her pay for voice lessons as a young girl.
Tone is the attitude of the author towards a text , while mood is the feelings that the reader has towards a text .
The best answer, and most likely answer would be D. I hope this helps! :)