A teacher who helps a toddler place shape blocks into a puzzle and periodically looks up to scan the remainder of the room, make eye contact, and smile at other children who are playing is likely doing which of the following?

A. Maintaining attention for safe supervision between the individual and the group
B. Failing to position herself/himself appropriately
C. Attending to the needs of the individual but not the group
D. Relying on another adult in the classroom to maintain safe supervision