Question

what crane device limits the angle of the boom at its highest position? select the best option. block boom stop jib if you need to review this content, it can be found in the introduction module of the cranes topic.

Explanation:

A boom stop is a device on a crane that restricts the angle of the boom at its highest position to prevent over - extension and potential accidents. A block is a component for lifting and reeving, and a jib is an auxiliary arm on a crane, neither of which limit the boom angle at the highest position.

Answer:

B. Boom stop