You are assisting in convergence optimization for an MPLS network. Which option should you recommend to prevent microloops in the core backbone of the service provider?

RSVP-TE is used for traffic engineering and explicit LSP path signaling in MPLS, not as a mechanism to prevent transient microloops during topology changes.

RLFA extends LFA coverage to destinations unreachable via a local alternate by tunneling to a remote PQ node, but it is a coverage extension rather than the primary microloop prevention tool for core backbone links.

LFA (RFC 5286) pre-computes a loop-free alternate next-hop for each destination in the forwarding table so that when a primary link fails, traffic switches immediately to the LFA without waiting for reconvergence, preventing the transient microloops that occur when different routers update their FIBs at different times.

Prefix suppression reduces LSA/LSP flooding on transit links to speed up convergence, but it does not pre-compute loop-free paths and does not prevent microloops from forming during the reconvergence interval.