Answer:
The correct answer is a. plasma and interstitial fluid
Step-by-step explanation:
Extracellular means outside the cell therefore the fluids present outside the cells are called extracellular fluids. Plasma and interstitial fluid are the most abundant extracellular fluid component measuring approx 97% of total extracellular fluid.
Interstitial fluid provide medium for transportation of different substances like nutrients and electrolytes which are important for a cell to function. They are also important for discharge of waste generated by the body cells.
Plasma is yellow colored fluid which contains mostly water and blood cells. They also helps in nutrient transport and waste removal. It makes about 55% of volume of blood.