During Miss Gross's Carefully Planned Whole Group Teaching Activity, Some

During Miss Gross's carefully planned whole group teaching activity, some children began to wiggle and poke each other. What should she do immediately?

A) Scan the group to determine children's interest level and to see if the problem appears to center on any particular child.
B) Stop what she is doing and scold the children for inattentive behavior.
C) Increase the volume of her voice and continue as though nothing is amiss.
D) Stop the group time and involve the children in a discussion about the group time rules.