Question 2121 Deck General

The correct answer is C) middle sheave top block. To reeve a right-angle threefold purchase, you start by reeving the fall through the middle sheave of the top block. This configuration allows the purchase to create a mechanical advantage of 3, making it easier to lift or move heavy loads. The other options are incorrect because the left or right sheaves of the bottom block, or the left sheave of the top block, would not create the proper right-angle threefold purchase configuration.