Answer:
A) Someone totally messed up my room; my sister looked very guilty.
Explanation:
Semicolons are kind of a period to a sentence, but it is used to link two sentences about the same topic into one sentence.
Answer:
Bullet List and Highlights
Explanation:
Bullet list: Bullet Lists always used to work for me when I would be writing notes and you can always label each bullet point after a topic so you can find which one you're looking for.
Highlights: You can write down the main points of the Passage and highlight the main points of the list you made and make sure you study the highlighted lines first and the normal ones second.
I don't know if i understand but i believe your answer is (D)V