Which of the following best describes the role of the EPA concerning pesticides?

The role of the EPA (Environmental Protection Agency) concerning pesticides is primarily to establish regulations for the safety and efficacy of these substances. This is fundamental to ensuring that pesticides used in agriculture and other industries do not pose unreasonable risks to human health and the environment. The agency evaluates data submitted by manufacturers to determine whether a pesticide can be registered for use. This evaluation process considers the potential effects on both human health and the environment, ensuring that any pesticides that reach the market meet strict safety standards.

The other options provided do not accurately reflect the EPA's responsibilities. The agency does not limit its regulatory scope to just organic pesticides, nor does it engage in setting prices for pesticide products, which are determined by market conditions. Additionally, the EPA does not monitor global pesticide usage; its focus is primarily on regulatory oversight within the United States. Thus, the emphasis on the establishment of regulations for safety and efficacy underscores the EPA's critical role in protecting public health and the environment from potentially harmful chemical exposures.