Answer:
WOOOOAAAH HOW YOU DO THAT. ALSO YOUR KINDA SUS IMAGINE STILL LOKING AT A DEAD MEME LOL
Explanation:
D is the correct answer.
In the badly drawn diagram attached, you will find the <em>yellow</em> represents wavelength, which is the distance between identical points on consecutive waves.
The <em>green</em> represents the amplitude, which is the distance between the origin (middle) and crest/trough (top/bottom)
We need more info, I am unable to find any pattern to this question.