Answer:
you can persuade someone by using persuasive language and if you're trying to sell something, always say positive things.
e.g. You're trying to sell a new car. You say it's got thick tires so
they don't get punctured easily
There are many ways of persuasion. One of the most common is incentive persuasion. You give the person(s) something they want for what you want. There is also factual presentation, persuasive speaking, etc...