Explanation
Our new static default route has the Administrative Distance (AD) of 120, which is bigger than the AD of OSPF External route (O*E2) so it will not be pushed into the routing table until the current OSPF External route is removed.For your information, if you don't type the AD of 120 (using the command "ip route 0.0.0.0
0.0.0.0 10.13.0.1") then the new static default route would replace the OSPF default route as the default AD of static route is 1. You will see such line in the routing table:S* 0.0.0.0/0 [1/0] via 10.13.0.1

Answer C is the technically correct selection. TACACS+ separates authentication, authorization, and accounting, while RADIUS commonly combines authentication and authorization. TACACS+ also encrypts more of the packet payload than RADIUS, but the answer choice that states only password encryption for TACACS+ reverses the facts. This aligns with Cisco CCNA 200-301 v1.1 because the exam blueprint requires engineers to recognize operational behaviour from configuration symptoms and topology requirements. Command accounting is usually stronger with TACACS+ for device administration, making C the correct comparison. Treat the distractors carefully: most are real Cisco terms, but they solve a different problem or operate at a different layer. The selected answer is the one that would be used by an engineer on the device or in the design to produce the outcome stated in the question.