36. Materials may contain role-play activities for groups of a certain size. However, the logistics of managing a large class are complex, and it will probably be necessary to assign one role to a number of pupils at the same time. This technique is called _______.
(A) simplifying
(B) deleting
(C) re-ordering
(D) modifying

McDonough (2013) talks about different techniques that can be applied to content in order to bring about change. There are:
1. Adding
2. Deleting or omitting
3. Modifying
4. Simplifying
5. Re-ordering
-
Adding: Adding implies supplying some more exercises for better exemplification. 
Deleting: Deleting or omitting is the opposite of adding or extending. Instead of putting in more, something is taken out of the content because it is repetitive, not quite appropriate, or simply too elaborate.
Modifying: Modifying the content is to introduce 'internal' changes in it, like changing the focus of an exercise or text by means of rewriting parts of it or restructuring the class management.
Simplifying: Simplification refers to the act of making items - instructions, explanations, questions, texts - appear simpler than they are in the original.
Reordering: Reordering means 'reworking' of a course book by changing the sequence of its units, or changing the sequence of presentation within a single unit.

-
Source:
https://blogs.brighton.ac.uk/annaneileltmaterials/2016/03/03/14/
Adapting materials: why and how?
https://egyankosh.ac.in/bitstream/123456789/21088/1/Unit-16.pdf
EVALUATING AND ADAPTING INSTRUCTIONAL MATERIALS
https://www.ijhcs.com/index.php/ijhcs/article/viewFile/208/218
Adapting Materials: Revisiting the Needs of Learners