If I remember correctly, Westerholm teaches it. He's a great professor, but does expect you to have prior knowledge. I haven't taken this specific course of his, but I have taken one of his courses on Paul, and the grading was two midterms and a final exam. There was both multiple choice, plus short answers. If you're looking for a class to bring up your GPA, I'd probably stay away from this one.
Out of the courses you've listed, I've done 2GG3, 2VV3, and 2YY3. For someone who doesn't know too much about the Bible, I'd recommend 2VV3 or 2YY3. For both courses, the professors started from the very beginning, explaining everything. They were very well aware that several students wouldn't know anything about the Bible, so they expected no prior knowledge. Plus, the courses are fun. There was one essay for 2YY3, and if I remember correctly, the exams were entirely multiple choice (I took it two years ago, so it might have changed). 2VV3 requires more writing. I think we wrote two shortish papers, and there was a midterm (which I don't remember, but I think there was a multiple choice and a short answer component), and the exam was open book and essay style. Both classes were easy (the professor for 2VV3 said that this course always has the highest average out of all the courses she teaches).
I had the prof who teaches 3Y03 and a friend who took that course, and if you're looking for something religious, I wouldn't take it. I took God, Evil and Reason (I forget the course code), and he said that 3Y03 was organized the same way. There was very little talk of religion in the course, which means you're not expected to have much knowledge in religion, but if you're looking to learn about Christianity you won't get much out of this course. There's lots of reading, two essays, and the final exam was two essay questions.
2GG3 was interesting, but it's pretty tough (I had Runnesson teaching it, I don't know if he's teaching it again this year). Again, I wouldn't recommend it to someone who has little to no prior knowledge.
If you want to know what's required in the courses, I'd recommend you read the course outlines.
Here's the link for 2008/09:
http://www.religiousstudies. mcmast...ines-2008-2009
Here's the link for 2009/10:
http://www.religiousstudies. mcmast...ines-2009-2010
They might not have all of the course outlines, but hopefully they'll make your choice a bit easier! If you're looking to learn more about Christianity/Jesus from a believers standpoint, I wouldn't take any of those courses. I know of several people who have taken a religious studies course and have left feeling frustrated because some of what they learned was contrary to what they have learned in church. So that's something to keep in mind.