I applied for that course, gotta say, it's not too hard to get into so I wouldn't worry too much.
noodles and nintendo: say shit about being inspired by nintendo games
how could this happen: experimenting with the unusual triplet sort of sound not found much in dance music
mindscape: taking chord progressions from oldschool rave and using them in a more modern context?
For the fourth I'd search your hard drive for something a bit more experimental and 'out there' (or start something new). The course is mostly focused on cutting edge experimental sound work (work with max/msp etc), so I think one piece of something that is a bit sound-design-ish would really help your application.
P.S: q_steppa
p.p.s: If you're struggling with this simple application task, u might want to really rethink doing this course, you're going to be doing this shit constantly, and if you don't enjoy it/aren't good at it, then it might not be worth doing. Obviously I don't actually know anything about you or the reasons you asked for help, but uni's a big deal, and the bath spa course is pretty useless unless you really love doing what they're teaching.