Complete the Following Sentence: Resonance Occurs in Harmonic Motion When

Multiple Choice

Complete the following sentence: Resonance occurs in harmonic motion when

A) the system is overdamped.
B) the system is critically damped.
C) the energy in the system is a minimum.
D) the driving frequency is the same as the natural frequency of the system.
E) the energy in the system is proportional to the square of the motion's amplitude.