I think it would be a because you don't use diagrams to show graphs because they are themselves a diagram
Change was to is, worked to work, prided to pride, cooperated to cooperate, felt to feel, and had to have.
Answer:
It gives an image in your head of a horse lifting their feet while trotting.
Explanation:
Member how he lifted his feet when he trotted
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather