Hi, a warm welcome to the site. You haven't given any context for this so would think the criteria needs you to use information from your setting's record keeping/learning statements, or maybe a child case study that you've already gained permission for.
The age & stages on talking point will help with expected patterns of development and help you identify where your individual's communication and language needs are currently resting.
If possible can you speak to a tutor or assessor to confirm what you need to do?
Hope this helps, best wishes xx