what can a producer gain by specializing?\no sales\no new customers\no absolute advantage\no opportunity costs

Brief Explanations:

Specialization allows producers to focus on what they do best, leading to increased efficiency and a comparative - advantage in the market. This can result in an absolute advantage over competitors in terms of cost - effectiveness or quality of the goods or services produced. Sales and new customers are possible outcomes but not the direct gain. Opportunity costs are what is given up, not a gain.

Answer:

absolute advantage