To add AWS accounts to the Prisma Cloud Enterprise tenant, the correct API endpoint is option C: https://api.prismacloud.io/cloud/aws. This endpoint is specifically designed for integrating cloud accounts with Prisma Cloud, enabling centralized visibility and security posture management across multiple cloud environments. By using this API endpoint, each AWS account can be individually onboarded to the Prisma Cloud platform, allowing for immediate posture visibility and consistent security policy enforcement across the newly acquired company 's extensive AWS footprint. This process aligns with Prisma Cloud's capabilities for multi-cloud security and compliance management, ensuring that the onboarding of cloud accounts is both efficient and aligned with the platform's best practices for cloud security.