A network suffers frequent SPF recalculations causing CPU spikes. Which OSPF tuning action will reduce the frequency of SPF runs by batching calculations?

Configuring timers throttle spf allows you to set a delay before the first SPF calculation and a hold-down time between subsequent calculations. This batches multiple topology changes into a single SPF run, significantly reducing the frequency of CPU-intensive SPF recalculations. Increasing OSPF hello and dead timers would slow down neighbor discovery and convergence, not directly reduce SPF frequency due to topology changes. Enabling OSPF fast-reroute provides quick alternate paths in case of a link failure but doesn't prevent or throttle SPF calculations; it's a separate mechanism for rapid convergence. Lowering interface costs influences path selection but does not reduce the frequency of SPF runs when topology changes occur.