The sentence communicates a matter of fact tone so the answer would be " matter of fact"
Answer:
Paper clips are a temporary means of grouping together separate pieces of paper, allowing flexibility in adding, or removing, sheets without any damage to the group as a whole.
Staples are a more permanent means of grouping separate papers, requiring the replacement of the staple to add or remove sheets from the group.
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Explanation:
<span>The sentence that is the hook in this introductory paragraph is </span>C.For the first time in decades,Baby Boomers have been outnumbered by another group-the millennial. This is the main idea of the paragraph and the other statements are the supporting details.