From the videos you can find below, you have to use two out of five. So, you do not need to use them all. In order to make your best choice you do have to watch all of them.
Do not forget to take notes when you see a video that you like. You can write down the most important information from the video and use it for your written exercise. Make sure that if you do this, you write down the source. For the video that would be the link, the name of the YouTube channel and the release date.
National Geographic https://www.youtube.com/watch?v=Beu_la4WlrE
Top Ten Things to Do in South Africa https://www.youtube.com/watch?v=p_EQ3t3e2Hc
Top Ten Things to Do in South Africa, by Donna Salerno Travel https://www.youtube.com/watch?v=17c8dN8lPOA
Top Ten Things to Do in Cape Town https://www.youtube.com/watch?v=a66LSbwbLKs
The Big Five in South Africa https://www.youtube.com/watch?v=_oF08SaTWuI