Refer to the exhibit. A network engineer must configure an LDP neighborship between two newly installed routers that are located in two different offices. Router 1 is the core router in the network…

This option provides commands for LDP protocol selection and authentication, but critically lacks the `mpls ip` command to enable MPLS forwarding and a direct LDP enablement command like `mpls ldp autoconfig` or `mpls ldp interface`.

This option includes LDP synchronization and Non-Stop Routing commands, which are advanced features but do not include the fundamental commands to enable MPLS forwarding or basic LDP neighborship.

This option includes LDP router-ID configuration and session protection, which are important aspects but do not provide the foundational commands for enabling MPLS on the interface and LDP neighborship itself.

To establish an LDP neighborship, MPLS forwarding needs to be enabled on the interface using `mpls ip`, and LDP itself must be enabled for label distribution. The `mpls ldp autoconfig` command automates LDP enablement on interfaces where an IGP (like OSPF, already configured) is running, facilitating LDP discovery and session establishment, while `mpls ldp interface` explicitly enables LDP on the specific interface.