Which of the following protects the body against infectious disease and foreign invaders?

A. Leukocytes
B. Red blood cells
C. Endoplasmic reticulum (ER)
D. Golgi apparatus


Correct Answer: A. Leukocytes

Detailed About MCQs

White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.