The severity of an electric shock depends on the amount of current flowing through the body, the current's path, the length of time the body remains in the circuit, and the circuit's ___________.

• A. frequency
• B. voltage
• C. resistance
• D. duration

Answer: (A)

The amount of harm from an electric shock is determined by the current that actually flows through the body, and that current is set by the circuit’s resistance when the voltage is fixed. This relationship is described by Ohm’s law: I = V/R. Higher resistance in the circuit lowers the current, while lower resistance raises the current and increases risk. The other factors—how the current travels through the body and how long it lasts—also influence damage, but the specific property of the circuit that directly controls how much current can flow is its resistance. Frequency isn’t the main determinant in typical safety contexts, and duration is already addressed in the prompt.