A hierarchy of levels of learning is helpful in writing objectives because: a. they are written for cognitive, affective, and psychomotor areas
b. focus on a knowledge base
c. they suggest observable, measurable behaviors that may occur as the result of both simple and complex learning
d. all of the above

D

Explanation:

Hierarchy of learning objectives was given by Bloom. These include remembering, understanding, applying, analyzing, evaluating, creating.

The hierarchy is important as -

So, for 'all of the above'

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.