What does it mean to raise swine in containment?

Raising swine in containment refers to a method of farming where pigs are kept in enclosed spaces or structures rather than on open land. This approach typically involves housing pigs in facilities that limit their outdoor access, which is precisely what the correct answer indicates.

Containment farming can provide several benefits, including greater control over the pigs’ environment, enhanced biosecurity to prevent diseases, and improved management of waste products. This system also allows farmers to monitor the animals' health and welfare more effectively.

Other choices may represent different farming practices. Feeding organic feed pertains to the type of food provided; access to pasture relates to more extensive outdoor farming practices; and raising pigs in large groups refers to the scale of the operation rather than the principles of containment itself. Each of these focuses on different aspects of pig farming, while containment specifically addresses the limitations on outdoor access.