Me i really need ! can someone put this in order here are the options: amplitude, crest, trough, and wavelength picture down below.

The first arrow, pointing to the hill is the crest, the one pointing to the U is a trough, the one pointing to the red line between the hills, crests, is a wavelength, and the one pointing to the blue arrow as the height of a crest is the amplitude.

Simple, don't do it. just don't go to that dock