I believe the right answer is A although I'm not completely sure.
Example of a sentence that most needs to be revised because it's description is too vague is : we hike two miles uphill in the blooming forest.
Usually, you hike on the mountain not in the blooming forest.
hoep this helps
<em>Neat</em> is the word that shows an opinion. Kamen says: " ....whole new set of <em>really neat</em> projects.." He has emphasised the word <em>neat</em> with <em>really, </em>so he is giving an opinion about the proyect.
I think it is USE ACTIVE VOICE i'm not totally sure hope it hleps