The British conquered India because the Indian Princes quarrelled ........................ themselves.

Correct option is D

"Among" is the correct preposition as it is used when referring to interactions or conflicts involving more than two entities. The Indian Princes collectively quarreled among themselves.
Information Booster:
1. "Among" is used for more than two individuals or groups.
2. Indicates mutual involvement in actions like conflict or sharing.
3. Precise and commonly applied in historical or literary contexts.
4. Replaces "between" when discussing groups larger than two.
Additional Information:
· (a) between: Suitable for two entities, not more.
· (b) over: Indicates the subject of a quarrel, not participants.
· (c) with: Suggests individual conflicts, not mutual discord.