What must be provided if long-term restraint of a nonhuman primate is necessary?

When long-term restraint of a nonhuman primate is deemed necessary, it is critical to ensure that the animal's well-being is prioritized. Providing daily unrestrained activity for at least one continuous hour is essential as it allows the primate to engage in natural behaviors, exercise, and maintain social interaction, which is vital for their mental and physical health.

Long-term restraint can lead to physical and psychological stress, so allowing a period of unrestrained activity helps mitigate these potential adverse effects. This provision is designed to align with the principles of humane treatment and care for animals under the regulations of the Animal Welfare Act, recognizing that nonhuman primates, like other animals, have their own needs for exploration and socialization.

The other options do not adequately address the need for the animal's welfare during extended periods of restraint. Daily food and water, while fundamental, are basic requirements for all animals and do not specifically address the effects of prolonged restraint. Intermittent access to food could lead to nutritional deficiencies and health issues, whereas complete isolation would be particularly detrimental, as nonhuman primates are social creatures and thrive in social environments.