Which of the following methods is a convenient and effective system of examining the body of an injury victim?

Correct Answer: Option A — Compare the corresponding parts of the body.

Comparing corresponding body parts is a fundamental diagnostic technique in trauma assessment. By evaluating the symmetry of limbs, pupils, or chest expansion, a responder can quickly identify abnormalities, fractures, or neurological deficits that might otherwise be overlooked during a rapid physical examination of an injured crewmember.