Final answer:
The correct answer is that the phase angle of an 80Hz sinusoidal voltage with zero phase angle and a 25mV amplitude is zero.
Step-by-step explanation:
For an 80Hz sinusoidal voltage with zero phase angle and a maximum amplitude of 25mV, the correct statement among the options provided is that the phase angle is zero. This means that there is no horizontal shift in the waveform and it starts at the origin when plotted on a graph. The frequency of the waveform is 80Hz, which refers to the number of cycles the voltage completes per second. The amplitude of the waveform is the maximum peak value of the voltage, which is 25 mV in this case. Options a, b, and c are incorrect as they either mix up the terms or misstate the characteristics of the voltage waveform.