Which strategy is a way to determine an author’s perspective in a text?

Which verb from is used to indicate the perfect progressive tense

What task did the surveyors do? a. they studied the landscape to determine the most direct route for building a road. b. they designed treadmills that lifted blocks of stone to where they were needed. c. they dug trenches and filled them with sand, concrete, and large blocks to form a road.

Analyze identify gandhi central claim in his letter. what key reasons does he provide to support his claim