It often helps to back up your opinion when you give a reason as to why you think something. This might help them to understand your point of view.
Do chores and help out around the house
If you want to persuade your parents to allow you to make a website, start by talking to them honestly. Tell them why it is important to you, and show them you can be responsible about the website as well.
There are many people in the world who will try to persuade you. Your parents and teachers will try this for example.
"People always used to assume (incorrectly) that I could cadge money from my parents."To cadge is to get something by begging for it.
You have to do something to show them that your mature enough, and then talk to them with reason about why you want to go out alone and how your up to it and so on.
Tell them how responsibly you will use it
I wish I knew. :'(
no
the parents want to reinforce it to show you that is important
Give them lots of chocolate
You buy your own food...........
If you want a 3D HD TV Set you could persuade them by saying that you can get a job and save enough money to buy it. Then give the money to your parents and they will be mighty pleased to get you a 3D. That's the way I persuaded my parents to get me a bicycle.