B, you don't have to include information of the author (you).
The Answer is The first-person plural mode of address
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I took the quiz and got this answer right (k12).
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Use signal words when you feel emotions when youre writing
What do you mean by 'in this unit'? If we're talking about scientists in general it would be A. curious. Not all scientists are talkative, pessimistic, or wealthy. So, that leaves curious. Because, why would you decide to be a scientist if you're not curious about the world and science?
