Your company has a set of resources defined as part of a subscription. Is it TRUE that Azure resources can only access other resources in the same resource group?

Answer options:

A.Yes
B.No

Answer : B 
Azure resources can access resources that are in other resource groups as well. 
For more information on Azure resources , please visit the below URL 

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