Concept:The blood fluid that keeps blood cells suspended is called plasma.
Explanation:Plasma is the yellowish, straw-colored liquid part of blood.
It makes up about
55% of total blood volume.
Plasma carries blood cells, salts, enzymes, nutrients, hormones, and proteins.
Serum is plasma without clotting factors, so it is not the correct choice.
Water alone does not hold blood cells in suspension, and thrombocyte is a blood cell.
Answer:B. plasma