De acordo com o assunto Língua Inglesa (Inglês): Questões sem classificação de assunto (Língua Inglesa (Inglês)), responda: > What does it mean when a product’s sales have "peaked"

Resposta

It means the product reached its highest sales volume during that time.

When sales peak, it indicates the point where the product's popularity and demand were at their maximum before declining or stabilizing.
For example, the sales of vinyl records peaked in the 1980s before digital music became dominant. After reaching that peak, sales declined as consumers shifted to CDs and then to digital formats.