Noooo! Could we keep the problem sets? I really need them. Please~

Yeah, when I open the drills page, the only thing appears is "create" a drill and "show existing drills". It used to have all those question type tags and filters there...

Why do you interpret the first sentence in the stimulus as a causation when it is only a correlation? How do you tell whether it's a causation or a correlation? I appreciate your info very much.

#help (Added by Admin)

Would choice B be correct if it said "railroad companies" instead of just "companies"? I appreciate your clarifications very much!

#help (Added by Admin)