Great question! And although your speaking date has already passed, I will answer this question for any other test takers who may be curious.
Here's how you want to approach Question 5.
First, spend 10 seconds describing the solution.
Then, spend the next 15-20 seconds describing the two problems.
Finally, take the last 30-35 seconds to give your opinion about which option you would choose.
If you have any more questions about this topic, please let me know.