Final answer:
Ariel should summarize the argument in her own words and critically reflect on it, assess the essay's structure, including the introduction's effectiveness, and examine the evidence and reasoning used to support the thesis statement.
Step-by-step explanation:
As Ariel analyzes the argumentative essay, one additional activity she should complete is summarizing the argument in her own words. This involves identifying the main points of the essay and explaining them succinctly. She should reflect critically on the argument to determine if she agrees with the writer’s points. She can also evaluate the effectiveness of the argument and the structure of the essay, including the introduction. Finally, Ariel should assess the use of evidence and reasoning throughout the essay to support the thesis statement, ensuring that the writer has provided information while maintaining an objective tone.