Which of the following addresses transporting animals across state lines?

The correct answer is associated with regulations concerning the transportation of animals across state lines, specifically the 28 Hour Law. This statute mandates that animals being transported in interstate commerce must be unloaded for rest, water, and food after a maximum of 28 hours. The law is designed to ensure the welfare of animals during transport, recognizing that long journeys without adequate care can lead to significant stress and health issues for the animals involved.

In contrast, other laws that were mentioned serve different purposes. The Animal Welfare Act focuses on the humane treatment of animals in research, exhibition, transport, and by dealers. The Endangered Species Act aims to protect threatened and endangered species and their habitats, not specifically addressing transportation across state lines. The Migratory Bird Treaty Act protects migratory birds by regulating the taking, possession, transport, and sale of these birds, which also does not centrally address the transportation of animals in general across state lines. Therefore, the 28 Hour Law specifically outlines the conditions and limitations for transporting animals, making it the appropriate choice for this question.