An instructor has decided to make adjustments to the learning material for a certain instructional situation and group of learners. Which of the following is the MOST important consideration in judging the appropriateness and adequacy of the adjustments?

A.
Whether they necessitate the design and use of new media

B.
Whether they make the course more informational for the most knowledgeable of learners

C.
Whether they provide the instructor with a sufficiently challenging teaching experience

D.
Whether they retain the integrity of the instructional design of the materials