destructive interference occurs when two or more waves combine to make a wave with a smaller amplitude C is your answer my friend :)
Two or more waves combining to produce a wave with a smaller displacement is called destructive interference .
Destructive interference happens when the maxima of two waves are 180° out of phase a positive displacement of one wave is canceled exactly by a negative displacement of the other wave.
The formula for brighter patches resulting from constructive interference and darker patches resulting from destructive interference in a diffraction grating is:
[tex]\rm d sin \theta = n \lambda[/tex]
Two or more waves combining to produce a wave with a smaller displacement is called destructive interference .
Hence, option C is correct.
To learn more about destructive interference refer to the link;
https://brainly.com/question/16098226
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