Social animals should be housed singly, yet able to touch other animals.

a. in pairs or groups.
b. singly, yet able to see and hear other animals.
c. in the largest groups possible.

A. In pairs or groups

Explanation:

For proper management of animals they should be well taken care of, be provided properly prepared houses to enhance the growth, reproduction and to maintain a good health.

Animals should be housed with a goal of maximizing species-specific behaviors and minimizing stress-induced behaviors.

For social species, this normally requires housing in compatible pairs or groups.

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