Con el fin de optimizar la adquisición de clientes, un anunciante debe identificar palabras clave con ____ más alto.

To optimize new customer acquisition, an advertiser should prioritize keywords with the highest "New-to-brand order percentage." This metric directly measures how often a keyword leads to a purchase from a customer who hasn't bought from the brand before, making it the most relevant indicator for acquiring new customers. While "Attributed sales" and "Conversion rate" are important for overall performance, they don't specifically differentiate between new and existing customers. "ACOS" (Advertising Cost of Sales) is a profitability metric, not a direct measure of new customer acquisition. Focusing on new-to-brand orders ensures advertising spend is effectively directed towards expanding the customer base.