C.
Falsifiable is the adjective form of the verb "falsify," which in science means "prove (a statement or theory) to be false."
Answer and Explanation:
1. passive natural immunity
2. decrease
3. passive artificial immunity
4. His body contains antibodies from his previous exposure, and his body was able to quickly fight off the infection
5. active natural immunity
6. B cells
7. Neutrophils
Astrology is not a main are of science
