Which command will show the best paths that are installed in the PFE?

`show route` displays the routing table (RIB), which includes all known routes (active, inactive, hidden) and is used for route selection, not directly the optimized PFE table.

`show route active-path` displays only the active routes from the routing table (RIB), which are candidates for the PFE, but it does not directly show the optimized PFE forwarding table itself.

`show route private` displays routes that are typically hidden from public advertisement or specific private routing tables, which is not directly related to showing active paths in the PFE for general forwarding.

The `show route forwarding-table` command explicitly displays the Forwarding Information Base (FIB), which is located on the Packet Forwarding Engine (PFE) and contains the optimized set of best active routes used for making rapid packet forwarding decisions.