¿Cuál de las siguientes opciones describe mejor la etapa de “introducción” de un calendario de ofertas para un evento de alto tráfico?

The "ramp-up" phase of a bidding calendar for a high-traffic event correctly begins 2-4 weeks before the event day, with bids gradually increasing. This strategy allows campaigns to gather data, optimize performance, and build momentum leading into the peak traffic period, ensuring maximum visibility and efficiency when demand is highest. The option describing a period after the event with decreasing bids refers to a "ramp-down" phase, not ramp-up. The option describing the actual event days is the "peak" or "event day" phase, where bids are typically at their highest, but it's not the ramp-up.