What is the purpose of the indentation in the center of a red blood cell? a. change the color of the cell b. decrease the oxygen carried by the cell c. decrease the size of the cell d. increase the carrying capacity of the cell

 D. Increase the carrying capacity of the cell

Option D

Explanation: The red blood cells have hollow structure in between the cell to carry oxygen to various parts of the body.

The red blood cells needs a large surface area for its proper functioning. The more will be the surface area the more will be the carrying capacity of the red blood cells.

The hemoglobin binds to the oxygen and carries it to the various parts of the body to provide oxygen for its proper functioning.

c is the correct answer hope this !

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it