Answer:
Whenever there is a pause, or if you are listing something.
Explanation:
Hypothetical evidence is based on speculation rather than on concrete facts. This is similar to a hypothesis in science.
The closest one I can see is answer D. The writer is asking you to imagine what would happen if leaders wrote their own speeches, instead of telling you what does and is known to happen when they do write their own speeches. (I hope that wasn't too confusing.)
Alliteration - similar letters or sounds at the beginning of a word in a sentence(s)
Metaphor - a comparison that does not use 'like' or 'as'
Simile - a comparison USING 'like' or 'as'
Personification - giving human qualities to inanimate things
Onomatopoeia - referred to as extreme exaggeration.