"Measure of strength or intensity. Maximum displacement from the zero line position of a signal" describes which of the following terms?

The term that describes the "measure of strength or intensity" and refers to the "maximum displacement from the zero line position of a signal" is amplitude. In the context of waveforms and electronic signals, amplitude quantifies how far the wave deviates from its rest position, also known as the equilibrium or zero line.

Amplitude is critically important in various fields such as sound engineering, radio transmission, and signal processing, as it directly relates to the power and energy carried by a wave. Higher amplitude indicates a stronger or more intense signal, which can translate to louder sounds in audio applications or clearer signals in communication systems.

In contrast, cycle refers to one complete waveform that includes a peak and a trough, while frequency is a measure of how many cycles occur in a second. Polarization deals with the orientation of the wave's oscillation in space, which is different from the concept of amplitude. Thus, amplitude is the only term relevant to the description provided in the question, focusing specifically on signal strength and displacement.