Answer:
Dysplasia is a broad term that refers to the abnormal development of cells within tissues or organs.
Explanation:
The root word which means "red" is a. erythr/o.
Just think about biology - you should know that red blood cells are called erythrocytes, where you can obviously see that root word.
Leuk/o refers to white color, and the other two options do not refer to colors at all.
I have the aspiration to be a singer one day:)