What should you inspect to be sure that it is safe to go aloft in a bosun's chair?

Correct Answer: Option D — All of the above

Safety aloft requires a comprehensive inspection of all components in the rigging system. The chair, bridle, gantline, and tail block are all critical points of failure. A defect in any single component could lead to a catastrophic fall, necessitating a thorough pre-use check of the entire assembly.