Which statement describes a benefit of using public clouds?

• A. Public clouds provide an environment for development, testing, and disaster-recovery applications.
• B. Public clouds guarantee lower costs in all scenarios.
• C. Public clouds require collocating data centers to run multi-regional applications.
• D. Public clouds never support multi-regional applications.

Answer: (A)

Public clouds offer flexible, on-demand resources that you can provision quickly, which makes them ideal for development and testing. Teams can spin up separate environments without buying and maintaining physical hardware, allowing rapid iteration, experimentation, and integration testing. The same cloud platform can also support disaster recovery by providing offsite, scalable backup and failover options, so you can test and run DR scenarios or keep DR sites ready in different regions without a separate, dedicated data center.

Cost is not guaranteed to be lower in every situation—the total expense depends on how you use resources, data transfer, and storage patterns. Collocating data centers isn’t a requirement to run multi-regional apps in the public cloud, since these platforms already provide global regions and the tools to replicate data and balance traffic across regions. And public clouds do support multi-regional deployments, with features to span regions for availability and resilience.

So the benefit described is the ability to provide an environment suitable for development, testing, and disaster-recovery applications.