Hunger is considered a primary drive because it is innate and acts as a biological motivator, driving behavior to satisfy the need for food. According to learning theory, the caregiver becomes associated with the provision of food, which satisfies this primary drive. Over time, this association means the caregiver becomes a source of comfort and security. This leads to the formation of attachment, which is viewed as a secondary drive learned through the association between the caregiver and the primary drive of hunger satisfaction.