In which subnet segments are reserved for local network use?

The choice indicating that the subnet segment reserved for local network use is 10.xxx.xxx.xxx is correct because this address range falls within the private IP address space designated for private networks. Specifically, the range from 10.0.0.0 to 10.255.255.255 is defined in RFC 1918 as a private address space, meaning it can be used by organizations for internal networking without requiring registration with the Internet Assigned Numbers Authority (IANA).

Private IP addresses, such as the addresses belonging to the 10.xxx.xxx.xxx range, are not routable on the public Internet. This feature allows multiple organizations to use the same address space internally without conflict. This makes it ideal for home networks, corporate intranets, and any network that requires not to be exposed to the public Internet.

In contrast, the other address suggestions in the question either include public IP address ranges or fall within other private ranges that have specific classifications. For example, while 192.168.xxx.xxx is also a private address range (and often used in local networks), 172.0.xxx.xxx is incorrect for local use because the correct reserved range is from 172.16.0.0 to 172.31.255.255.