Technician exam question T0A02

WhyElectrical current flowing through the body can cause injury by heating tissue, disrupt the electrical functions of cells, and cause involuntary muscle contractions. Current passing through the body can heat tissue, interfere with the small electrical signals that cells and nerves use to function, and trigger involuntary muscle contractions, sometimes strong enough to prevent someone from letting go of the source, so all three are genuine hazards, answer D. Picking just one of A, B, or C would understate the range of real harm electrical current can cause.