D is for...
D is for... Dare to be different!
There are a few ways to approach the competition and show your skill base to be in with a winning chance; you may have a 'unique style' that could be carried across all the briefs, i.e. David Hockney has a distinctive style but carries it across to different subject matter, still showing diversity.
Or
For each brief you may decide to show a different side to you and your 'diverse' skill base, i.e. if you're a graphic designer, you might want to use typography, illustration, or photography for the different brief.
Be unique, original and innovative.