Most of the cells in the human body are .

RBC's?

Explanation:

I'm not sure if this is what is being asked but red blood cells made up about 80% of all of the cells in the human body. I hope this is what you need:)

Red Blood Cells

Explanation:

These cells make up approximately 80% of the cells in the human body.I hope this helps:)

b

is correct hope this   also i learnd this in middle school