Your company wants to deploy a set of Azure virtual machines. They want to increase the availability of the underlying machines. You decide to deploy the machines across multiple availability zones. Would this fulfil the requirement?

Answer options:

A.Yes
B.No

Answer: A 
Yes, this is the right approach. You can use either Availability sets or zones to increase the availability of your virtual machines. 
For more information on Azure availability sets and zones, please visit the below URL 

https://docs.microsoft.com/en-us/azure/availability-zones/az-overview
https://docs.microsoft.com/en-us/azure/virtual-machines/manage-availability