Las estadísticas de ______ muestran el número de clientes expuestos al anuncio, así como el número total de exposiciones.

Reach and frequency metrics provide the number of unique customers who saw an advertisement (reach) and the average number of times each unique customer saw the advertisement (frequency). These metrics are crucial for understanding ad exposure and saturation. "New to brand" measures purchases made by customers who haven't bought from the brand on Amazon in the last 12 months, which is a sales performance indicator, not an exposure metric. "Visibility" (often referring to viewability) indicates whether an ad was actually seen by a user, but it doesn't encompass both unique users and total exposures in the same way "reach and frequency" does.