Question

the sudden appearance of many new species when organisms move into unoccupied habitats and niches divergent evolution convergent evolution adaptive radiation

Explanation:

• Divergent evolution refers to related species evolving distinct traits over time, not the sudden emergence of many new species in unoccupied niches.
• Convergent evolution is when unrelated species develop similar traits due to similar environments, which does not match the definition provided.
• Adaptive radiation is specifically the rapid emergence of numerous new species from a single ancestor as they fill unoccupied habitats and ecological niches, which aligns perfectly with the given description.

Answer:

adaptive radiation