One Sign That a Child Is Securely Attached to Its

One sign that a child is securely attached to its caregivers is that:

A) it continues to play happily when the caregiver leaves
B) it is not afraid of strangers when the caregiver is present
C) when the caregiver returns after an absence he or she is ignored
D) in the caregiver's absence the child can be comforted by a stranger