An argument is a verbal or written action we perform in order to convince others of the cast-iron certitude of our ideas, thoughts, opinions, or beliefs about a particular issue. As a writer of this essay type, you have to make your best effort so as to convince your target readers/listeners. As a result of your arguments, your reader may agree with your and take a certain action or raise further questions on the concerned issue.
As an argumentative essay writer, you have to use credible and persuasive reasons, so that your reader may agree with your standing in support on the topic. To do this, you are required to present solid supporting information in form of arguments which can justify the thesis statement of your essay.
This kind of essay writing requires extensive topic research to come up with convincing reasons. You must be equipped with relevant information to support your point of view, as it is usually a controversial topic.
Your teacher will assign you the topic and probably a few resources in order to let you learn how to make a strong thesis statement and support it with persuasive reasons. Still, it will be a hard task to complete on your own.