Ideally you should select an organisation where you are able to include primary research and interview the entrepreneur that founded the organisation. Alternatively, you can undertake secondary research and analyse a venture using information in the public domain.
You should try to select a venture which in some way relates to one or more of the potential business concepts/ideas which are being considered by your group. For example, you could select a venture that operates in the same or similar market, or adopts a similar business model, or uses similar technologies to the ventures that you are considering