Question

1. according to this article, your immune system works much like...

a. the ocean b. an army
c. an engine in a car d. a computer

1. where are white blood cells made?

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

Explanation:

Question 3

The immune system defends the body against pathogens, similar to how an army defends a territory. The ocean, car engine, or computer don't align with the immune system's defensive role.

White blood cells (leukocytes) are produced in the bone marrow, which is inside bones. The thymus matures T - cells (a type of white blood cell) but doesn't produce them. The brain and heart don't produce white blood cells.

Answer:

b. an army

Question 4