Question

multiple - choice question
how did the bubonic plague have a biological impact?
it let the strong people help the sick in society
it helped invent antibiotics
it left behind a stronger gene pool, which made people stronger and healthier

Explanation:

The Bubonic Plague led to a significant reduction in population. Through the process of natural selection, those with genetic traits that provided some resistance to the plague were more likely to survive. This resulted in a relatively stronger gene pool in the surviving population, as individuals without such traits perished. Antibiotics were not invented due to the Bubonic Plague (they were developed much later through scientific research in the 20th century). And while in some cases people might have helped the sick, this is more of a social or humanitarian aspect rather than a direct biological impact in terms of gene - pool strengthening.

Answer:

It left behind a stronger gene pool, which made people stronger and healthier.