Which of the following is the most abundant type of blood cells?

Correct option is D

Ans. (d)
Sol. Erythrocytes (red blood cells) are the most abundant blood cells, making up about 99% of the total cellular content in blood. They are primarily responsible for oxygen transport.
Explanation of each option:
· (a) Lymphocyte – A type of white blood cell; less abundant.
· (b) Monocyte – Also a type of WBC, and even less in number.
· (c) Thrombocyte – Platelets; fewer than erythrocytes.
· (d) Erythrocyte – Correct. Most numerous blood cells.