Explanation:

In the given sentence, we need a synonym for "robbed" related to Mahmood's actions in the city of Anhilwad. Here's a breakdown of the options:

- Conquered: This means to take control of a place through military force. While it involves taking over, it doesn't specifically relate to stealing or robbing.

- Plundered: This means to steal goods, typically using force in a time of war. This is a direct synonym for "robbed" and fits the context well.

- Annexed: This involves adding a region to a country, often through diplomatic means or as part of conquest, not focused on stealing.

- Attacked: This refers to initiating an assault. While attacking can involve violence, it doesn't emphasize stealing or robbing directly.