Refer to the exhibit. An engineer is updating this network to meet these conditions: - Area 10 will receive inter-area routes and support mutual redistribution of external routes with the extranet…

Configuring Area 11 as `nssa` would allow external routes to be injected into it (Type 7 LSAs), contradicting the requirement that external route redistribution is not supported in Area 11.

Configuring Area 10 as `stub` would prevent it from supporting mutual redistribution of external routes, as stub areas do not allow external (Type 5) LSAs, which conflicts with the requirement.

Configuring Area 11 as `stub no-summary` on ABR R7 and `stub` on internal XR31 makes it a Totally Stubby Area, which will receive only a default route (::/0) from ABR R7, will not support external route redistribution, and R7 will not advertise inter-area routes into it.

Configuring Area 11 as `nssa default-information-originate` on R7 would make R7 originate a Type 7 LSA for the default route into Area 11 and also allow other external routes if not a `no-summary` NSSA, which contradicts the requirement for Area 11 to receive only the ::/0 route and no external redistribution.

Configuring Area 10 as `nssa` on R9 and XR32 allows it to receive inter-area routes and support mutual redistribution of external routes (via Type 7 LSAs) while prohibiting a ::/0 route if `default-information-originate` is not explicitly configured.