Which of the following filters is designed to allow only low-frequency signals to pass through while attenuating higher frequencies?

A) High-pass filter

B) Band-pass filter

C) Low-pass filter

D) Notch filter

Answer: C) Low-pass filter

Explanation: A low-pass filter permits signals with frequencies lower than a certain cutoff frequency to pass through while attenuating signals with frequencies higher than this cutoff. This is commonly used in applications to eliminate high-frequency noise.