A hospital wants the patient intake application to scale automatically with demand. Which Azure benefit supports that?

Elasticity is the correct answer because it refers to the ability of a system to automatically scale resources up or down in response to changes in demand. For a patient intake application, this means the system can handle sudden spikes in patient registrations without manual intervention, ensuring performance and availability. Manual provisioning is incorrect because it requires human action to scale resources, which doesn't meet the "automatically" requirement. Reserved instances are a cost-saving measure for predictable, long-term workloads, not a mechanism for automatic scaling. Role-based access is a security feature that controls who can access what resources, unrelated to scaling.