Answer: d. After each semester, you asked your adviser to review your progress to ensure you remained on track for your anticipated graduation date
Step-by-step explanation:
Efficiency is measurable and has to do with the ability to achieve a goal or get a result that's desired and avoid wastage of efforts or resources.
With regards to the explanation above, the statement that relate specifically to your efficiency is asking the level adviser to review ones progress in order to show that one is on track.
This shows that the person wants to achieve the goal of graduation and is putting all of his efforts towards that.