Which feature or protocol must you enable so that the output of the show interfaces trunk command includes information about native VLAN mismatches?

RSTP (Rapid Spanning Tree Protocol) is used to prevent loops in a switched network and does not provide native VLAN mismatch detection.

CDP is a Layer 2 protocol that discovers information about directly connected Cisco devices, including their native VLANs, and can report discrepancies in native VLAN configuration on trunk links.

PortFast is a STP feature that immediately brings an edge port to the forwarding state, bypassing the listening and learning states, and does not relate to native VLAN mismatch detection.

DTP (Dynamic Trunking Protocol) is used to negotiate trunking parameters between two Cisco switches and does not report native VLAN mismatches in `show interfaces trunk` output.