Mr. o'dell wants to assess mastery of knowledge after teaching several lessons on the skeletal system. what assessment method aligns best with his goal?

I believe the answer is: Multiple-choice test

Multiple-choice test is a testing method which requires the student to choose one correct answer from available options.

This type of method is perfect for a students who already have several lessons from a certain topics but still haven't be able to grasp the full concept of that topic.