¿Verdadero o falso? Si el objetivo de un anunciante es la eficacia de las ventas, debería disminuir las pujas por palabras clave con ACOS altos.

True. If a seller's goal is sales efficiency, they should decrease bids for keywords with high ACOS (Advertising Cost of Sales). A high ACOS indicates that the advertising spend for those keywords is generating a low return on investment, meaning you're spending a lot to make a little. By lowering bids on these underperforming keywords, you reduce your advertising costs, which directly improves your overall sales efficiency and profitability. Conversely, you would increase bids on keywords with low ACOS, as they are driving profitable sales.