What does the term "signal-to-noise ratio (SNR)" quantify?

A) The total power of the signal

B) The ratio of the signal power to the noise power

C) The frequency response of the system

D) The time delay of the signal

Answer: B) The ratio of the signal power to the noise power

Explanation: The signal-to-noise ratio (SNR) quantifies the strength of a desired signal relative to the background noise, with higher SNR values indicating clearer signals and better quality.