The first one is not it because it doesn’t really matter. The second one is not it because you can’t “re-read” something that you listened to. The third and fourth are your best bet. In my personal experience though, teachers will lower your grade if your presentation takes too long. So I think it’s the last one but I wouldn’t completely rule out the third one
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it has the answer to your whole question
Answer: The correct Answer is Her constant enthusiasm is a pretense that cannot be trusted.
The earth is dirty
The earth is pretty
The earth is weird
The earth does not have enough water
The earth has too much dirt
True
The "underlined" sentence is the topic sentence as it identifies the main idea or focus of the paragraph. It contains the general idea where the remaining sentences of the paragraph is based, providing the specific ideas. It makes a strong impression instantly expressing to the readers what the paragraph will be about.