*EXTRA PTS* Please solve the Low and High Training Zones for a twelve year old student in Mr. Smith's P. E. Class with a resting heart rate of 72 beats per minute.

Which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.