Which among the following is the correct order of changes in the membrane potential during an action potential?

Correct option is C

The action potential follows this sequence: Polarization (resting state at -70mV) → Depolarization (membrane becomes less negative, reaching +40mV) → Hyperpolarization (overshoots below resting potential) → Repolarization (returns to resting state).

Information Booster:
• Polarization (Resting State): Neuron membrane is at resting potential (~-70mV), with more negative charges inside
• Depolarization: Sodium channels open, Na+ ions rush in, membrane potential becomes positive (+30 to +40mV)
• Hyperpolarization: Potassium channels remain open too long, K+ efflux causes membrane to become more negative than resting potential (~-80 to -90mV)
• Repolarization: Membrane gradually returns to resting potential as ion pumps restore normal distribution
• The entire action potential cycle takes approximately 1-2 milliseconds
• The refractory period during and after an action potential prevents backward propagation and limits firing frequency