I think it's D because A is correct B could be right and C is wrong. But the answer D is basically A and B combined. I know i explained that horribly but D should be correct.
Since this is an open question with no choices, I am answering with what I think will best fill in the blank. Note: I do not know exactly what answer they are looking for.
The best answer is: REM
REM is the stage of sleep where dreaming occurs. REM stands for Rapid Eye Movement. Exactly as the title says, REM sleep is characterized by fast back and forth movement of the eyes.
Diction- Word choices made for tone and clarity (E)
- Diction is a writer's unique style of writing, especially his word choice or order
Transitions- Words that connect ideas and paragraphs (B)
- Some examples of transitions include and, in addition, next, last, etc...
Unity- Staying on topic in an essay or paragraph (A)
- Your ideas should be united, or on the same topic, to make sure your essay flows well. It wouldn't make sense if you jumped around from topic to topic.
Usage- Correctness of phrases and clauses (C)
- You need to make sure that you <u>use</u> correct phrases and clauses for your writing to make sense.
Syntax- The order of words in a sentence (D)
- There are three types of sentences: simple, compound, and complex.
C. hers is the singular pronoun