My dissertation research direction

We need to submit a 4000 words proposal on 13 May.
This week I met my supervisor and discussed my research direction.
At frist I only focused on the Brighton Festival young audiences, but my supervisor provided my some commets.
I will correct my research direction.

1.Young audience: (A) Who is young audience? How old?
(B) young audiences in festival, sports,events
2.development: (A) attracting more audience
(B) to educate the youth
(C) diversity
3.sustainable: how sustain the youth? provide recommendation

At this moment, I should read more literatures and look for more relevant information, and then I can understand how can I do next step.