Which Type of Child Could Be Labeled as Feeling "Secure

Which type of child could be labeled as feeling "secure"?

A) Those that become upset when the parent leaves the room, but are seek out and are comforted when the parent returns.
B) Those that do not become upset when the parent leaves the room and continue to play with other children.
C) Those who become upset when the parent leaves the room and are inconsolable even after the parent returns.
D) Those who do not become upset when the parent leaves the room who later seek the parent when he or she returns.