Argue or persuade - I personally chose argue because I found it the most fun out of the 3. Since it's your own opinion, you're given a lot of creative freedom.
My teacher was against advise unless it was a really good question because you'll be desperately pulling things out of the air if the question's awful which won't help in a timed exam! xD
The second part really depends on your writing style. I have always loved descriptive writing, which meant that I tackled that question head on and enjoyed it. The questions make it relatively clear what you're expected to do.