How do you change balloons in Mario Kart Tour?

In "Mario Kart Tour," balloons are a part of certain event challenges rather than an in-game item that you can actively change during races. When dealing with balloon-related challenges, it is crucial to read the challenge description carefully. For example, a challenge may require you to hit balloons on a specific course or pop balloons using a particular driver, kart, or glider setup. To complete these tasks, one must select the appropriate character and course as guided by the event or tour details, then use items such as shells or bananas during the race to interact with any balloons presented on the track. Success in these challenges is typically rewarded with Grand Stars or other in-game bonuses. However, there is no feature within the game to change balloons directly, as they are not customizable elements like karts or gliders.