Question

what must an object experience a frequency equal to in order for resonance to occur?
○ its wavelength
○ its period
○ its amplitude
○ its natural frequency

Explanation:

Resonance is a phenomenon where an object vibrates with maximum amplitude when subjected to an external oscillating force. This occurs only when the frequency of the external force matches the object's inherent, natural vibration frequency. Wavelength, period, and amplitude are unrelated to the condition for resonance.

Answer:

its natural frequency