Select the most appropriate option to fill in the blank.
The boy was punished ______ his disobedience.

Correct option is B

The correct option to fill in the blank is (b) for.
Explanation: The preposition “for” is used to indicate reason/cause after verbs like punish, fine, scold, praise: punished for disobedience (आज्ञा न मानने के कारण दंडित किया गया).
Example: “She was fined for speeding.”
Why other options are incorrect:
· (a) in — marks time/place/condition ( in July, in Delhi), not reason. (Hindi: में)
· (c) to — indicates direction/recipient ( to the school), not cause. (Hindi: को/की ओर)
· (d) at — time/place/target ( at 5 pm, at the gate, laugh at), not reason. (Hindi: पर)
· Info booster: Collocations with for to denote cause: rewarded for, blamed for, thanked for, expelled for.