Final answer:
The IP address 110.3.122.248 is publicly routable as it does not fall within the private IP address ranges specified by RFC 1918. Therefore, the correct answer options is b)
Step-by-step explanation:
The IP address that is publicly routable among the options given is b. 110.3.122.248. The other IP addresses listed (a. 10.20.17.4, c. 172.16.49.8, and d. 192.168.0.102) are part of private IP address ranges, which are not routable on the public Internet. These ranges are specified in RFC 1918 for private networking.
The IP address 110.3.122.248 does not fall within the private IP address ranges and therefore is considered a publicly routable IP address. It can be routed on the Internet, allowing devices with such an IP address to be accessed globally given there are no other restrictions like firewalls or NAT (Network Address Translation).