The correct options are
A By the massive felling of trees to meet the demands for wood.
B Clearing of large parts of forest for plantations.
C Bypassing laws to regulate the felling of trees.
The British exploited the forests in three ways. Firstly they had a huge demand for wood to be met and cut down large numbers to meet this. Secondly, they cleared large parts of forests to make space for plantations. Thirdly, they wanted to regulate the cutting of trees and passed laws related to it.