You have to match the Azure Cloud Service benefit to the right description. Which of the following is the right Azure Cloud Service benefit that matches the following description? 
“A cloud service that can be restored in the event of a catastrophic loss.”

Answer options:

A.Fault Tolerance
B.Disaster Recovery
C.Dynamic Scalability
D.Low Latency

Answer - B 
This term refers to disaster recovery. 
Below is a snippet from the Microsoft documentation on the terminology. 

Option A is incorrect since this is used to ensure that a service is running even in a service failure event. 
Option C is incorrect since this is used to ensure that a service is scalable even when it increases. 
Option D is incorrect since this is used to ensure that a service is quickly accessible to users over the Internet. 
For more information on failure and disaster recovery, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/architecture/reliability/disaster-recovery