Question 703 Deck General

The correct answer is C) a hook that has been closed by wire. The regulations require the use of a hook that has been closed by wire or other positive means when handling Class 1 explosives. This is to prevent the hook from accidentally opening and allowing the cargo to be dropped, which could be extremely hazardous. The other options are not suitable - a safety hook with the latch open (A) would not provide the necessary security, an open hook (B) is not allowed, and a screw-pin shackle (D) is not the appropriate attachment device for this type of lifting operation.