Renaldo has great respect for his English teacher, Ms. Jefferson. She has the uncanny ability to keep the class on track from one activity to another. Even as they move out of their independent seatwork into their response groups, her smiling presence is enough to keep students on-task. Which strategy of increasing academic learning time best characterizes Ms. Jefferson's method?
A. Maintaining activity flow
B. Minimizing transition time
C. Holding students accountable
D. Showing she is in charge