To fight disease in the body To carry oxygen to all parts of the body To remove carbon monoxide from all parts of the body To produce materials which cause the blood to clot.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What is the main function of red blood cells?
Possibilities:
- To fight disease in the body
- To carry oxygen to all parts of the body
- To remove carbon monoxide from all parts of the body
- To produce materials which cause the blood to clot.

To carry oxygen to all parts of the body