Answer: The writer can make the introduction more effective by adding an opening sentence that strengthens the hook so that the reader keeps reading all the way to the claim.
Step-by-step explanation: One way of making the introduction provided more effective and compelling is adding a sentence that provides interesting facts at the beginning of the paragraph as starting an argumentative essay with a fascinating idea will grab the attention of the readers. In other words, an interesting introductory sentence will make the readers more engaged towards the text. Therefore, the writer could make reference to an interesting characteristic about graffiti artists or graffiti art in general to achieve this purpose.