The correct answer is C) 55

Plasma is the liquid component of blood that makes up about 55% of total blood volume. The remaining 45% is made up of red blood cells, white blood cells, and platelets.

Plasma is mostly water (90%) but also contains dissolved ions, hormones, nutrients, and waste products. It plays a vital role in maintaining the proper balance of fluids and electrolytes in the body, as well as helping to transport various substances around the body.

• C) 55% is the percentage of Plasma in the total blood volume in human beings.
• Blood is composed of two main components: plasma and formed elements (red blood cells, white blood cells, and platelets).
• Plasma is the liquid component of blood, which is mostly composed of water (about 90%) and dissolved substances such as ions, hormones, nutrients, and waste products.
• The formed elements make up the remaining 45% of the blood.
• Red blood cells, also known as erythrocytes, are responsible for carrying oxygen from the lungs to the rest of the body.
• White blood cells, also known as leukocytes, play a key role in the immune system by fighting off infections and foreign invaders.
• Platelets, also known as thrombocytes, are responsible for blood clotting.
• In a healthy human being, the plasma volume represents about 55% of the total blood volume, while the formed elements make up the remaining 45%.
• Plasma plays an important role in maintaining the proper balance of fluids and electrolytes in the body. It also helps to transport various substances around the body, including hormones, waste products, and nutrients.

So, the answer is C) 55% is the percentage of Plasma in the total blood volume in human beings.