Question

what can help ecosystems survive in the face of change (either sudden or gradual)
volcanic eruptions
changing into deserts
biodiversity
rewatch

Explanation:

Biodiversity provides resilience. It allows ecosystems to adapt as different species can respond differently to changes, filling various ecological niches and maintaining functions. Volcanic eruptions and changing into deserts are forms of environmental change that ecosystems need to survive, not factors that help them survive.

Answer:

C. Biodiversity