What's the belief behind a primary-caregiver system?
a. paying special attention to three or four children promotes a stronger attachment.
b. infant-toddler classrooms should have a 1: 1 ratio.
c. care for infants, toddlers, and primary students should take place in mixed-age groups divided by sex.
d. a tag-team approach with all caregivers working in a large group of children of mixed ages, in which children are free to form their own groups for play across age and gender lines, is best.

A). Paying special attention to three or four children promotes a stronger attachment.

Explanation:

The reason why "A). Paying special attention to three or four children promotes a stronger attachment" would be the correct answer choice is because being able to pay attention to the same multiple children at once gives someone a stronger attachment between them and the children.

The primary-caregiver system is especially a system that is mostly seen in teachers, due to the fact that they have to pay attention to multiple kids at once.

The system would allow a child to have a caregiver that they can trust. A caregiver would have a stronger attachment, or bond, to a child if they take care of multiply kids at once than a caregiver taking care of only one child.

Caregivers that take care of multiple children have stronger bonds or attachments because they get the experience the life of different children and be more ready when it comes to taking care of the children.