Which term defines a potential source of danger?

accident chain

injury

hazard

safety conscious

Hazard

Explanation:

accident chain

 This is danger, but it is not a potential source of danger.

injury

Again, POTENTIAL. An injury is already being confronted by danger

hazard

A hazard describes a potential source of danger.

safety conscious

This is possibly the opposite, as this is the avoidance of danger.

you would have a std. i hope this .

answer(b) keep oxygenated and deoxygenated blood separate;