The correct answer is C) pull the hook release handle and use the ratchet bar. To disengage a survival craft suspended from the cable above the water, you must first pull the safety pin. This releases the hook mechanism that is holding the craft in place. Next, you need to use the ratchet bar to lower the craft to the water. The ratchet bar provides mechanical advantage to control the descent of the heavy survival craft. The other options are incorrect because B) and D) mention depressing the retainer, which is not the correct step, and A) does not include using the ratchet bar to lower the craft.