Which action can help the company achieve this goal?

Explanations:

Enabling API caching in API Gateway allows frequently requested data to be stored temporarily, reducing the need for repeated calls to the backend (AWS Lambda), which enhances the responsiveness of the APIs by providing quicker access to cached data.

Configuring API Gateway to use an interface VPC endpoint is primarily for secure access to APIs from within a VPC. While it can enhance security and reduce latency for internal calls, it does not directly improve responsiveness for public API access.

Enabling CORS (Cross-Origin Resource Sharing) allows browsers to request resources from different origins, but it does not enhance the performance or responsiveness of the API itself. It is more about enabling cross-domain requests than improving speed.

Configuring usage plans and API keys helps manage API usage and can throttle requests, but it does not inherently enhance responsiveness. It primarily addresses access control and monitoring rather than performance improvement.