What might account for a soldier experiencing syncope after standing at attention for a long period of time?

Question

Quizplus · Accepted Answer

Standing at attention for a long period of time can cause blood to pool in the legs, leading to decreased venous return to the heart and a decrease in blood pressure, which can result in syncope (fainting). Options A, B, and C may occur in response to standing at attention but are not the primary cause of syncope in this scenario.

What Might Account for a Soldier Experiencing Syncope After Standing