For this proposal, you will bid on a particular project in writing, hoping to convince a potential client to let you conduct research for them. In this case, your bid is, of course, artificial: everyone is going to be working with the same site. However, you should imagine that you are writing directly to the client, competing to win their business. In a comprehensive proposal, you will demonstrate your expertise and explain why your team, in particular, is best suited to the task.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.