Question

TIMED PLEASE HELP! Which is shown by the letter X?

trough
amplitude
crest
wavelength

Answer 1

The answer is crest

Step-by-step explanation:

The highest surface part of a wave is called the crest

Answer 2

Answer: crest

Step-by-step explanation:

X is pointing to the peak of the wave. Hence, the answer is the third option: crest.