<p>This has been asked before and I'm still not sure of what was decided.</p>
<p>They see all your scores, but I think the consensus was that write down your highest score. They might look at your writing and see that it was higher in one session.</p>
<p>They ask that you put your highest score. So you should do just that. However, they will see your other scores on the report. Which UCs are you aiming for?</p>