Correct Answer:
Option B - The correct shape of the sentence will be:
The doctor had asked him to abstain from sweets because he had diabetes.
Abstain from – Fixed preposition.
Hence, option (b) is correct.
B. The correct shape of the sentence will be:
The doctor had asked him to abstain from sweets because he had diabetes.
Abstain from – Fixed preposition.
Hence, option (b) is correct.