Which of the following protective factors are linked to children's healthy social-

emotional development?
A. Secure attachments with parents/caregivers
B. Positive parenting practices
C. High quality out-of-home child care environments
D. All of the above
E. B and C only

D. All of the above

The protective factors that are linked to children's healthy social-emotional development include:

A. Secure attachments with parents/caregivers, and
B. Positive parenting practices.

The correct answer is D. All of the above.