If I have time to do more than one aiste can I? Will they just mark me on my best?
I think concentrate on one only
Technically you could do as many as you want and your best is marked but i dont think there is a point to write another essay if your first one was good. Pick the topic that you can answer best.
Write one well and spend good time on it. Stick to word limit or exceed it. If you have time try a second one but don't panic yourself trying to get two done.