Hi, can anyone explain to me why E is the correct answer and not A. The conclusion seems to proceed on the basis that merely because papercrete is considered by those who use it in small scale projects to be promising, it is likely to be promising for large-scale as well. I thought this was a flaw a...

Can someone explain to me why B is the correct answer? All the answers seem equally vague to me. And B says "Amusia results from an inability to discern pitch...". Would it not be the other way round? Won't Amusia be the reason for the difficulty these people face in pitch differentiating.