Resource pooling is the correct answer because it describes a cloud computing scenario where the provider’s computing resources are pooled to serve multiple tenants, with different physical and virtual resources dynamically assigned and reassigned according to tenant demand. Each tenant's data and services remain isolated and inaccessible to other tenants, which is essential for maintaining privacy and security compliance. The other answers, while related to cloud computing and networking, do not specifically address the isolation and management aspects critical to multitenancy environments.