BDO presentation

"Discuss a business or industry of your choice, include who they are, the challenges they are currently facing and how BDO could assist them. The business or industry does not need to be a current BDO client and your presentation should last no longer than 20 minutes. You will not have access to powerpoint facilities, so if you wish to use any form of visual aid or handout you should bring these with you." Really don't know where to start with this, my interview is on Thursday.