Bike rental is when you go to a store or a place to rent a bike for a little while. It's like when you go to a toy store and rent a toy for a day. Only with bike rental, you get to use a bike instead of a toy.
When you rent a bike, you get to choose the one you like the most. That's like when you choose a toy you want to play with. Once you have chosen the bike, you pay the person who rents it to you for the time you want to borrow it.
The person who rents the bike to you will give you some rules to follow when using the bike. They will tell you to wear a helmet, not to go too fast, and to stay within certain areas. These rules are important for your safety and the safety of others around you.
After you follow the rules, you can have fun riding the bike wherever you want! Just like when you play with a toy, you get to go wherever you want, but you need to be careful not to damage the bike or hurt yourself.
When you are done with the bike, you return it to the same place you rented it from. That's like when you return a toy to the toy store. Once you return the bike, you pay the person who rented it to you the amount that you agreed on at the start.
In conclusion, bike rental is like borrowing a toy from a toy store, only with bikes. You get to choose the one you like, pay the person who rents it to you, follow the rules for safety, have fun riding the bike, and return it when you are done.