Answer: Ensuring automatic failover to healthy resources.

The correct answer is C, 'Design for automatic failover to healthy resources.' This best practice ensures that if a resource fails, the system can automatically switch to a healthy resource to maintain service continuity. This approach is crucial for high availability and fault tolerance in AWS workloads. The other options do not directly address the need for immediate failover in the event of a component failure. Option A, while important for disaster recovery planning, does not provide real-time resilience. Option B suggests a specific AWS region, but region choice alone does not guarantee operational continuity. Option D is not a best practice as it suggests a single point of failure, which goes against the principles of high availability and redundancy.

Author: LeetQuiz Editorial Team