A startup’s cloud-hosted mobile app stays responsive during traffic spikes without manual intervention. Which feature explains this behavior?

Elasticity is the correct answer because it describes the ability of a cloud system to automatically scale resources up or down to meet demand. This ensures the application remains responsive during traffic spikes without manual intervention. Centralized billing is a financial benefit, not a performance feature. Network latency refers to delays in data transmission and doesn't explain automatic scaling. Role-based access is a security mechanism for controlling who can access resources, not a feature for handling traffic fluctuations.