Question

which example illustrates charles darwins main contribution to the theory of evolution?○ an agricultural pest has been exposed to a pesticide that wipes out the entire species.○ in a laboratory, a scientist chooses the most intelligent mice and breeds them to advance the species○ when exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.○ in the african savannah, a scientist observes that a wildebeest calf has inherited its coat pattern from its father.

Explanation:

Charles Darwin's key evolutionary contribution is the theory of natural selection, where organisms with traits suited to their environment survive, reproduce, and pass on those traits. The correct example shows antibiotic-resistant bacteria surviving (a heritable favorable trait) and reproducing, which aligns with natural selection. The other options either describe artificial selection, non-evidental events, or simple inheritance, not Darwin's core evolutionary mechanism.

Answer:

When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.