A. osteocyte
B. neurone
C. erythrocyte
D. leucocyte
Correct Answer:
Option C – erythrocyte
Explanation
Red blood cells are microscopic and have the shape of a flat disk or doughnut, which is round with an indentation in the center, but it isn’t hollow.
Red blood cells don’t have a nucleus like white blood cells, allowing them to change shape and move throughout your body easier.