The distance of a wave crest from its resting. position is its. out of
a. wavelength
b. amplitude
c. height

Assuming its "resting" is the place in the middle of the wave crest and trough, the distance between the crest and the middle line would be considered its amplitude. The height of a wave is the distance between the crest and the trough, and wavelength is the distance between two crests.

can you please translate for us into English