Answer:
It is option C I think.. Not so sure but I think it's the right answer
Plasma is blood minus the corpuscles. Components of plasma include;
Respiratory gases (oxygen and carbon dioxide)
Nutrients (glucose, amino acids and vitamins)
Proteins (such as albumins and other carrier proteins)
Hormones (such as steroid hormones)
Antibodies and clotting factors
Waste products such as urea
This question seems like its too easy so i might have got it wrong.. but would't you just subtract 20 and 10 from 800 to get 770?