¿Cuál de las siguientes es una mejor práctica para la optimización del presupuesto que ayuda a maximizar la entrega y el rendimiento?

The correct answer is to use projected line item spend to identify important tactics likely to under-deliver and broaden their targeting settings or increase the max average CPM. This is a best practice because it proactively addresses potential under-delivery by either expanding the audience pool (broadening targeting) or making bids more competitive (increasing CPM), both of which help maximize delivery and performance. Opting out of budget optimization for short flight campaigns is incorrect because budget optimization is crucial for efficient spend, regardless of campaign duration. Avoiding mixing urgent pacing strategies with other pacing profiles in the same campaign is generally a good organizational practice to prevent pacing conflicts, but it doesn't directly address maximizing delivery and performance in the same way as adjusting targeting or CPM for under-delivering tactics.