Refer to the exhibit. Which technology could be used in this design to provide link recovery and high traffic capacity?

Rapid PVST accelerates Spanning Tree convergence and prevents bridging loops but does not aggregate links or increase total forwarding bandwidth.

MST maps multiple VLANs to fewer spanning tree instances to reduce overhead, but it provides no link aggregation or per-path capacity increase.

PAgP negotiates EtherChannel formation between Cisco switches, combining multiple member links to provide load-balanced high throughput and automatic recovery when an individual link fails - directly addressing both link recovery and high traffic capacity requirements.

Flex Links provide active/standby failover between two uplinks, but only one link carries traffic at a time, offering redundancy without any bandwidth aggregation.