Respuesta :
Correct answer choice is :
C) A pipe's length is equal to 1⁄2 of the wavelength of the sound waves produced by a tuning fork vibrating over one end of the pipe that's open to the air at both ends.
Explanation:
Resonance happens when the amplitude of an object's vibrations are enhanced by the parallel vibrations of a different object. Resonance is the tendency of a mode to vibrate with raising amplitudes at some wavelengths of excitation. These are identified as the system's loud frequencies. The resonator may have a primary frequency and any number of harmonics.