The correct answer is D) French bowline. The French bowline is a secure knot that is suitable for hoisting an unconscious person. It creates a loop that can be easily passed around the person's body, allowing them to be lifted safely and securely. The French bowline is a versatile knot that is often used in rescue and emergency situations where a reliable and adjustable loop is required. The other answer choices are not as well-suited for this task. The fisherman's loop and spider hitch are not as secure or adjustable as the French bowline, while the bowline in a bight is more commonly used for other purposes, such as creating a fixed loop or attaching a line to an object.