I'd go with B - Article. There are hundreds of good examples for the answer being B. For example, "a book" ('a' is an article - 'book' is a noun), "an apple" ('an' article - 'book' noun). Those are just the simple ones.
The best statement, I think, is that the volume is the same for any gas. If we assume we have an ideal gas, this statement is very valid since it has been established that at STP, where the temperature is 0 degrees Celsius and the pressure is 1 atm, the volume of 1 mole of gas is 22.4 L.
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Answer: Humans were hunters and gatherers, they were always trying to find new food and plants. This is why they moved from one place to another
I hope this helped!
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- Zack Slocum
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The answer is C) because it was quoted in the article. When a writer uses another article for their work they cite (put in quotations) the title of the article and anything they used from it or it will be plagiarizing
A is the answer to ur question