Part 2 involves a hypothetical situation. You will not earn any money in this part. Still, please, answer as if the experiment was played for real money.
In part 2 of the experiment you will interact with the same opponent as in part 1.
Imagine you have been given £100. Please make a proposal for how to divide the £100 between yourself and your opponent.
If your opponent accepts your proposal the £100 will be split as you suggest. That means that your opponent gets the amount that you offer him/her, and you keep the rest.
If your opponent rejects your proposal, you both get zero.