Company XYZ is running BGP as their routing protocol.

A (Enhance TCP performance):Path MTU Discovery allows TCP to dynamically learn the maximum transmission unit (MTU) along the path and avoid fragmentation. This reduces retransmissions, maximizes throughput, and improves efficiency for TCP-based applications such as BGP.

Other options explained:

B/C: PMTUD does not affect convergence times.

D: Loop prevention is unrelated to MTU discovery.