To prevent backward collapse of a crane after two-blocking, should the operator pull continually on the hoist line?

The correct choice indicates that the operator should not pull continually on the hoist line to prevent backward collapse after two-blocking. Two-blocking occurs when the hook block comes into contact with the upper block or the boom, potentially leading to dangerous situations.

In this context, pulling continuously on the hoist line does not help stabilize the crane or its load. Instead, in the event of two-blocking, the operator should immediately stop and assess the situation. By continuing to pull on the hoist line, the operator risks causing additional stress on the crane's structure and may further compromise its stability.

Proper crane operation involves understanding the mechanics of the crane and recognizing when to halt operations. In situations of two-blocking, actions should focus on safely managing and lowering the load rather than applying unnecessary force that could lead to collapse or other failures.