¿Cuál describe mejor la etapa de "introducción" de un calendario de ofertas para un evento de alto tráfico?

The "introduction" stage of a deal calendar for a high-traffic event like Prime Day or Black Friday typically begins 2-4 weeks before the event itself. During this phase, advertisers gradually increase their bids to build momentum, raise awareness, and capture early interest from shoppers researching products. This strategic ramp-up helps to maximize visibility and engagement as the event approaches. The option describing the actual event days is incorrect because that represents the "peak" or "event" stage. The option describing 2-4 weeks after the event is incorrect as that would be the "wind-down" or "post-event" stage, where bids are typically reduced.