Linda and Gary, newly arrived back at home with their week-old child after a difficult birth, feel they cannot separate from their baby at night, allowing him to share their bed. This practice is called

Attachment parenting

Explanation:

Attachment parenting is a practice by which a parent or parents attach to an infant to foster emotional closeness and responsiveness. This parenting philosophy was coined by a pediatrician called William Sear. Attachment parenting tries focus on a nurturing and emotional connection between parents and children. One principle of attachment parenting in addition to others is parents co-sleeping with their infants in the same room or on the same bed to ensure emotional connection and feeding of the infants.

Linda and Gary's feeling of not separating from their infant at night is attachment parenting

answer; aristotle;