Why not answer it yourself? This is from a free edX subject exam. If after 12 weeks you can't answer a few very easy questions, then what have you been doing? Obviously not the work.
LOL. Not homework. This is the exam for an edX course. Free course. Certificate is just a bit of digital paper. But there are those who are desperate for the certificate. Why?
Not everybody want a "cheat" here. I myself am looking for comparitive information for a group discussion on this subject. Thanks all the same.