Final answer:
The correct answer is Availability Zones. Availability Zones are a high-availability offering in Azure that protects applications and data from datacenter failures.
Step-by-step explanation:
The correct answer is B. Availability Zones.
Availability Zones are a high-availability offering in Azure that provide redundancy and fault tolerance for applications and data. They are separate physical locations within an Azure region, designed to be isolated from each other to protect against datacenter failures. Each Availability Zone has its own power, networking, and cooling infrastructure, ensuring that if one Zone becomes unavailable, the applications and data can continue to run in the other Zones.
For example, if an application is deployed across multiple VMs in different Availability Zones, and one Zone experiences a failure, the other Zones can seamlessly take over and keep the application running without any disruption.