What does the Environmental Enrichment plan for nonhuman primates need to address?

The Environmental Enrichment plan for nonhuman primates is vital for their well-being and mental health. It needs to address both social grouping and environmental enrichment. Nonhuman primates are highly intelligent and social creatures that thrive in complex social structures; hence, they require companionship and opportunities for social interactions with their peers. These social dynamics can significantly impact their behavior and psychological health.

In addition to social grouping, the plan must incorporate environmental enrichment, which includes factors such as physical structures, objects for manipulation, and a stimulating environment that encourages natural behaviors. This can include providing toys, varied habitats, and activities that mimic their natural behaviors. By addressing both social and environmental aspects, the plan helps reduce stress, fosters natural behaviors, and improves the overall quality of life for nonhuman primates in captivity.

The other options focus on narrower aspects of care that do not encompass the comprehensive needs of these animals. For example, while diet variety is crucial, it alone does not meet the social or behavioral needs. Breeding programs are also important but don't directly pertain to an enrichment plan focused on immediate welfare. Outdoor habitat access can be beneficial, but it doesn't replace the need for a properly structured social and enriched environment that fosters healthy behaviors.