The statement that best explains how a wheat farmer in the Northern Plains region of the United States is able to maximize profits is:
Option E: Grain farming is an extensive farming practice that can maximize profits in part by lower land costs, lower transportation costs, and imperishability of the product.
This option highlights the benefits of extensive farming on larger plots of land, where economies of scale can lead to reduced costs and increased profitability, along with the logistical advantages of producing a durable product like wheat that can be transported relatively easily. The focus on cost-effective practices and the nature of the product makes it a more accurate depiction of how farmers in this region can maximize profits.