Answer B is the correct answer. It is the only IP address shown in the four options that is a routable IP address. The address groups listed in answers A, C, and D are reserved for private networks and are not routed by the Internet, so those answers are incorrect. You will need to memorize the address groups reserved for private IP networks. Solution Answer B is the correct answer. It is the only IP address shown in the four options that is a routable IP address. The address groups listed in answers A, C, and D are reserved for private networks and are not routed by the Internet, so those answers are incorrect. You will need to memorize the address groups reserved for private IP networks..