正解:A
In the context of Cisco devices, when configuring a port channel with LACP (Link Aggregation Control Protocol), both ends of the port-channel must be set to compatible modes for the LACP bundle to form successfully. The exhibit shows that interface Gi0/1 is in an active state (SA flag), which means it is actively sending LACP packets. For Gi0/0 to join the bundle, it also needs to be set to either active or passive mode.
Since we want it to function as expected and form a port-channel, setting it to 'active' will ensure that it sends LACP packets and attempts to negotiate with other LACP-enabled ports.