Answer:
D
Step-by-step explanation:
Hierarchy of learning objectives was given by Bloom. These include remembering, understanding, applying, analyzing, evaluating, creating. 
The hierarchy is important as - 
- they are written for cognitive (mental), affective (emotional) , and psychomotor (phsyical skill based) areas
 - focus on knowledge base, by going through all levels (memory, understanding, reflective) levels of teaching
 - they suggest observable, measurable behaviors that may occur as the result of both simple and complex learning
 
So, for 'all of the above'