Question 13

@Zahra the issue with (B) is that just because a neighborhood is qualified, it doesn't mean that the neighborhood has made a request for interim sweeping. Compare that with (D), "A qualified neighborhood that REQUESTS an interim sweeping will have its streets swept more than once a month." Hope that helps! Please let us know if you have any other questions.

Hi there, I ended up choosing D but think that C could have worked as well. Could we get an explanation for why C is wrong? For context, this is my diagram NMF > QIS not QIS > not NMF Request from qualified neighborhood > Satisfied not satisfied > not qualified neighborhood Answer c: not qualified > not swept more than once a month (not QIS > not more frequest) swept more than once (more frequent) > qualified Answer D: QN > swept more than once not swept more than once > not qn that requests - I chose D because we know that if a qualified neighborhood requests interim sweepings it'll be satisfied which means it'll be swept more than once a month. Why is C wrong? It looks like it could be traced back as well.

@Kanyin, Happy to help. Let's look at (C). Here's how we can diagram the stimulus: A diagram helps here. Street in Town - > Swept Min Once/Month Needs More Sweepings - > Qualified Interim Sweepings Qualified Interim Sweepings - > Request Satisfied Immediately This doesn't really link well, but we do know from this that if a street in town needs more than 1 sweeping per month, it'll be qualified, and if a qualified street requests another sweeping, its request will be satisfied immediately. (C) says, "No street will be swept more than once a month unless it is located in a qualified neighborhood" This is the inverse of our diagram. We know that qualified - >extra sweeping, but this does not mean that not qualified - >not extra sweeping. Since it's the inverse, it definitely isn't a 'must be true,' so we can get rid of this answer choice. Does this make sense? Let us know if you have any other questions!