When giving first aid, you should understand how to conduct primary and secondary surveys in addition to __________.

Correct Answer: Option C — the limits of your capabilities

First aid training emphasizes the 'scope of practice' principle. Recognizing the limits of one's capabilities is critical to prevent further harm to the victim. A mariner must provide immediate life-saving care while simultaneously arranging for professional medical evacuation or consultation, acknowledging that they are not a substitute for trained physicians.