The correct answer is 'Clustered servers with resource balancing' because it allows for the distribution of compute tasks across multiple servers, providing high availability for the various services with differing compute requirements. In the event of a server failure, tasks can be redistributed to other servers in the cluster, minimizing downtime. The incorrect answers are: 'Single powerful server with a hot spare' does not address the diverse compute needs and may lead to underutilization or bottlenecks. 'Multiple air-gapped systems' could provide isolation for security but would not be efficient for resource management across services with different compute needs. 'Decentralized servers without load balancing' would not efficiently distribute compute tasks and could result in suboptimal performance and higher risk of service disruptions.