Correct option is C
The key advantage of active filters over passive filters is their use of active components (like operational amplifiers) to not only filter the signal but also to amplify it (provide gain). Passive filters, made only of resistors, capacitors, and inductors, can only attenuate a signal (have a gain of less than 1). Active filters also offer much greater flexibility and precision in controlling filter parameters like the cutoff frequency and Q-factor, and they eliminate the need for bulky and expensive inductors at audio frequencies.
