The crest is the highest point of a pebble-induced ripple in a body of water. Option a is correct.
The distance between two successive troughs or crests is known as the wavelength. The highest point of the wave is the crest, while the trough is the lowest.
The high point of the ripple seen in a pond after throwing in a pebble is the crest.
Hence option a is correct.
To learn more about the wavelength refer to the link;
https://brainly.com/question/7143261
#SPJ1
