Kapok life jackets require proper care and should NOT be __________.

Correct Answer: Option D — all of the above

Kapok life jackets rely on buoyant material that is highly flammable and susceptible to degradation. Using them as seats or pillows compresses the kapok, destroying its buoyancy, while exposure to open flames or weather significantly compromises the integrity and life-saving capability of the device as required by 46 CFR.