Answer:
the discoveries, events and people that continue to affect the history ... The extremely infectious disease was class-blind, killing rich and ... that a few cells remaining in Petri dishes could be used as biological weaponry. ... smallpox, a disease that had now been killing unhindered for at least 2,800 years.
Explanation:
That’d be the 2nd one from the right.
That population has the highest variety of organisms(individuals) compared to the other populations.