
Explanation:
Box 1: Y
The 4 resources created are the RG1 resource group + the 3 storage accounts.
Box 2: N:
The location of the storage accounts is defined by the parameter "location" in the "resources" item that has the value of the Resource Group (stated by the "resourceGroup().location" function that returns the location of the resource group RG1 which is in Central US).
Box 3: Y:
The names of the storages account have the prefix given by the copyIndex() function in "name":
"[concat(copyIndex(),'storage',uniqueString(resourceGroup().id))]", which starts at the position 0.