In the Part B we receive all the other information about the client. Here is how I would suggest approaching the exam:
The first thing you should do is read this in full, without highlighting anything.
On your second read through, highlight important areas.
Use your notes on your third read through, is the BMI normal? What training do they already take part in? What is positive or negative about their diet?
Mind map/ bullet point notes for each question. What areas do you need to include? Use the structure you have added in your 4 sides of A4 to work towards higher level answers.