Correct option is B
Option (b) is the correct meaning of the given idiom.
Idiom: Blessing in disguise – something that appears bad or unlucky at first but results in something good. (Hindi: छुपा हुआ वरदान)
Example: Failing the exam turned out to be a blessing in disguise — it helped me switch to a better career path.
Other related idioms:
· Every cloud has a silver lining – Good can come out of bad situations
· Turning point – A significant positive change from an earlier bad phase