Biology

The correct answer is: C.The fossil record showing gradual changes in species.

Explanation:

One real-world example of gradualism in action is seen in the fossil record, where gradual changes in species are documented over long periods of time. Fossils show incremental changes in traits (like size, shape, or structure) that accumulate over many generations, leading to the formation of new species. This pattern supports the idea of gradual speciation through small, consistent changes.

The other options:

A.The emergence of new viral strains: This process, while it inv...