KarMishh
I understand why B is the correct choice but in E I am confused regarding the usage of "alter the behaviour", I mean we don't know how will threat of prosecution "alter" ? like in a positive or negative manner. what if these downloaders gets more notorious and even starts downloading more or expands their community? In that case this choice will fall apart.
The correct choice is E, not B. It seems unlikely to me that the threat of prosecution would make someone more likely, rather than less, to download illegally, but remember what we're trying to do here. We want to know which question, if answered, would most help us evaluate the truth of the conclusion. If we got the answer to question E, and the answer was "yes, the threat of prosecution will make people more likely to download illegally", then we learn that the conclusion is false: the threat of prosecution will have an "impact on the number of people who illegally download music." It would just be an "impact" in the opposite direction from what the music industry wants. So even if that turned out to be the answer to the question posed in choice E, it would still help us evaluate the conclusion, and E would still be a good answer to this CR question.