What does "oversampling" mean in digital signal processing?

A) Sampling at a rate lower than the Nyquist rate

B) Sampling at a rate significantly higher than the Nyquist rate

C) Sampling only at critical points in the signal

D) Not sampling at all

Answer: B) Sampling at a rate significantly higher than the Nyquist rate

Explanation: Oversampling involves taking samples of a signal at a rate significantly higher than the Nyquist frequency, which can improve signal quality and facilitate easier filtering.