Final answer:
The circuit's average power is determined by Option a) Voltage × Current, representing the direct multiplication of voltage and current.
Step-by-step explanation:
The average power absorbed by the circuit is determined by the product of voltage and current, denoted as Option a) Voltage × Current. This reflects the real power consumed by the circuit. The other options either represent impedance (Option B), incorporate only resistance without considering the power factor (Option C), or calculate real power in a resistive circuit (Option D). The formula for average power, P = VI cos θ, involves the power factor, where θ is the phase angle between voltage and current. In this context, Option a) is a straightforward and accurate choice for evaluating the circuit's average power consumption, encapsulating the real power aspect without the complexities introduced by the power factor.