Can you be more specific and the link is not working.
The 2nd choice is the most engaging
Let us take Napoleon Bonaparte for example. His crusade, in part, failed due to the harsh Russian weather that caught his army as he wanted to conquer Russia. So, I would assume Napoleon would have loved one of myriad weather apps that can be found both on Android and Apple phones so wouldn't be caught off guard again.
It means like don't over use it or don't under use it. Use it for when you need it and when its important rather then use it for something that doesn't matter.
Answer: I'm not going to write your whole essay for you, but some good reasons to use would be: A change in atmosphere, they can experience what life is like on a different planet, they can get a chance to learn more about mars or anything else about space, and they can compare and contrast how different mars is from earth along with make new memories on a different planet.
