Refer to the exhibit. Which configuration must be added to enable GigabitEthemet 0/1 to participate in OSPF?

While syntactically correct, this option assigns the network to Area 0, which may not be the intended area given the prompt or common OSPF design principles.

The `network` command for OSPF configuration must be entered under `router ospf <process-id>` configuration mode (indicated by `config-router`), not global configuration mode (`config`).

The `network` command under OSPF router configuration mode is used to specify which interfaces belong to the OSPF process and their respective area. `network 10.10.1.0 0.0.0.255 area 1` correctly identifies the network 10.10.1.0/24 (using the wildcard mask 0.0.0.255) and assigns it to OSPF Area 1, and is applied from the correct `config-router` mode.

The wildcard mask for a /24 subnet (255.255.255.0) is 0.0.0.255, not 255.255.255.0, which would match only the host address 10.10.1.0.