Which of the following is opposition to the flow of alternating current in a capacitor?

Reactance is the opposition to the flow of alternating current (AC) caused by capacitance or inductance. In the case of a capacitor, this specific opposition is known as capacitive reactance. Unlike resistance, which opposes both DC and AC equally and dissipates energy as heat, reactance temporarily stores and releases energy in electric or magnetic fields. The incorrect options describe different electrical concepts. Conductance is the reciprocal of resistance, measuring how easily current flows. Admittance is the overall reciprocal of impedance. Reluctance is a property of magnetic circuits, acting like resistance but for magnetic flux, and does not describe AC opposition in a capacitor.