The opposition to the flow of alternating current is influenced by which of the following factors?

The opposition to the flow of alternating current (AC) is influenced by both resistance and reactance due to the nature of AC circuits. Resistance refers to the opposition to current flow that dissipates energy, primarily in the form of heat, and is consistently present in all electrical components. Reactance, on the other hand, is the opposition that arises specifically in AC circuits due to the inductance and capacitance of components, which store and release energy but do not dissipate it as heat.

In AC circuits, the total opposition to current flow, known as impedance, is a combination of both resistance and reactance. Resistance will affect the amplitude of the current, while reactance influences both the amplitude and phase angle between the voltage and current. Therefore, understanding that both factors contribute to the total opposition in AC circuits is essential for effective electrical analysis and design.

Other options suggest limitations to the sources of opposition, which do not reflect the reality of AC circuit dynamics.