Some Mizo chiefs initially resisted British encroachment, while others adopted strategies of:

The correct answer is: a) Cooperation and negotiation.

Some Mizo chiefs initially resisted British encroachment, while others adopted strategies of cooperation and negotiation. They realized that they could not defeat the British in a war, so they tried to reach an agreement with them. This strategy was successful in some cases, and the British agreed to leave some of the Mizo lands alone. However, in other cases, the British were not willing to negotiate, and the Mizo chiefs were forced to continue fighting.

The other options are incorrect because:

• Option b) Exile to neighboring countries is not a strategy that was adopted by any of the Mizo chiefs.
• Option c) Conversion to Christianity is not a strategy that was adopted by any of the Mizo chiefs. In fact, the Mizo people were not converted to Christianity until after the British had taken control of their land.
• Option d) Modernizing their armies is not a strategy that was adopted by any of the Mizo chiefs. The Mizo people were not able to modernize their armies because they did not have the resources to do so.