An instructor was unable to cover the last concept in the course, yet test results from the last day indicated that all members of the class correctly answered questions addressing this concept. In this situation, which of the following should the instructor have done? 

Answer options:

A. Monitored learner performance during instruction
B. Administered tests
C. Evaluated learner`s attainment of end-of-course objectives
D. Judged the adequacy of the evaluation

D