in this diagram, the distance known as the am...
in this diagram, the distance known as the amplitude is shown by choice a a b b c c d d
Answer
# Answer:
A. a
# Explanation:
## Step1: Recall amplitude definition
Amplitude is the maximum displacement from equilibrium.
## Step2: Identify in - diagram
In the wave diagram, 'a' represents the maximum displacement from the equilibrium position (the horizontal line), so 'a' is the amplitude.