I like the manga's "angels of death" and "demon slayer" (you probably already know demon slayer if you like manga/anime). angels of death is a good manga, though it has a lot of blood in the anime. Also, it might get a bit boring.
Plethora would be the collective noun because it is a group.
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The answer is <em>add a period after ring and capitalize the first letter of she and add a semicolon after the ring.</em> This is because a fused sentence is a sentence that is separate but can be joined by punctuation and conjunctions.
Hope that helps. x
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A. They give instructions about how to do an activity.