Final answer:
The claim is false; Azure Storage replicates data at least three times within the primary region under its default Locally Redundant Storage (LRS) option, and features other redundancy options for additional copies across multiple locations.
Step-by-step explanation:
The statement that data uploaded to an Azure storage account is only copied once within a single physical location in the primary region is false. In fact, Azure Storage offers redundancy options which determine how many copies of your data are maintained at any time. Typically, in the default redundancy setting called Locally Redundant Storage (LRS), data is replicated three times within a single physical location in the primary region. Other options, such as Geo-Redundant Storage (GRS) and Zone-Redundant Storage (ZRS), go further by replicating the data across multiple locations, either within the same region or across different regions, to ensure higher levels of data durability and availability.