Which command would configure OSPF to redistribute routes from a connected protocol?

The command "redistribute connected" is used to allow OSPF to advertise routes that are learned from directly connected interfaces into the OSPF routing domain. When you enter this command within the OSPF routing process configuration, it takes routes from the connected routing table and redistributes them into OSPF so that neighboring OSPF routers can learn about those routes.

For example, if you have an IP address assigned to an interface that is not configured in OSPF but is a directly connected network, it won't be advertised to other OSPF routers unless you use this command. This is essential for ensuring that all networks in your routing topology are accounted for and reachable.

In contrast, the other options reflect different redistribution commands tailored for specific needs. The command related to redistributing static routes would be used when you want to advertise static routes into OSPF but does not pertain to connected routes. “Redistribute default” is not a valid command in OSPF; while default routes can be injected into OSPF, this option doesn't represent the correct syntax. Finally, “router ospf redistribute” lacks the necessary context, as it does not specify which type of routes are to be redistributed, making it an incomplete command.