Question

1. where are white blood cells made?

a. in your bones
b. in your thymus
c. in your brain
d. in your heart

Explanation:

To determine where white blood cells are made, we recall biological knowledge: Hematopoiesis (blood cell production) occurs in the bone marrow within bones. The thymus is for T - cell maturation, not production. The brain and heart don't produce white blood cells. So the correct option is the one stating production in bones.

Answer:

a. in your bones