A company is planning to deploy a set of repeatable resources to Azure. They want to deploy the resources in the most efficient way possible. Which of the following could they use for this requirement?

Answer options:

A.Resource groups
B.Resource Manager templates
C.Resource providers
D.Management groups

Answer – B 
If you want to deploy a repeatable set of resources, consider using the Azure Resource Manager template. 
The Microsoft documentation mentions the following. 

Since this is clear from the documentation, all other options are incorrect. 
For more information on resources, resource groups and templates, please refer to the below URL- 

https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-overview