The answer is 2.Stan is a voracious reader, an expressive writer, and a skillful painter because in a parallel structure all of the ideas hold the same amount of importance. For example, in this sentence the ideas are that Stan is a reader, a writer, and lastly a painter.
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I believe its both but if I had to choose one I'd say
you should not chew gum in class because it's rude
Why:
It makes it look like your uninterested and not listening
If you have a cell phone yes, most students would use it for social media but it may also be used for school related topics.
Answer:
c. $5 per bag
Explanation:
it's just a reasonable price