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Which of the following would BEST reduce the risk of application programming interface (API) unavailability?
Correct Answer: D
Limiting the rate of incoming requests, known as rate limiting, helps prevent API overloading by controlling the number of requests a client can make within a specific timeframe. This measure protects the API from being overwhelmed, ensuring better availability and performance. While dedicated servers, continuous integration/deployment, and stress testing contribute to overall system robustness, rate limiting directly addresses the risk of unavailability due to excessive or malicious traffic. References: ISACA CISA Review Manual, 28th Edition, Chapter 4: Information Systems Operations and Business Resilience.