Answer: After each semester, you asked your adviser to review your progress to ensure you remained on track for your anticipated graduation
Explanation:
Efficiency has to do with one's ability to achieve a particular goal while avoiding wastage. One who does something efficiently, does that particular thing sufficiently.
The option that relates to efficiency is option D "After each semester, you asked your adviser to review your progress to ensure you remained on track for your anticipated graduation date".
This brings about efficiency as one is on track to achieving a goal.