i would say the absolute method but im not sure sorry
D because trachea is the tube, bronchi is what splits into your lungs, bronchioles are what look like branches of the bronchi, and alveoli are the little air bags at the bottom of the smallest bronchioles.
Answer:
D) Majority; unvaccinated
Explanation:
Herd immunity is a form of immunity that occurs when the vaccination of a significant portion of a population (or herd) provides a measure of protection for individuals who have not developed immunity
