which of the following would be most suitable as a thesis statement for a persuasive essay

8. Identify the incorrectly punctuated sentence. (1 point)
I will buy Tim a T-shirt and a poster in the gift shop.

1) A subject: playing sports

Example 5: George Will writes, “Economic equality is good for the United States.”

Do not expect to come up with a fully formulated thesis statement before you have finished writing the paper. The thesis will inevitably change as you revise and develop your ideas—and that is ok! Start with a tentative thesis and revise as your paper develops.
You should provide a thesis early in your essay — in the introduction, or in longer essays in the second paragraph — in order to establish your position and give your reader a sense of direction.

References:

http://www.roanestate.edu/owl/Thesis-Statements.html
http://www.cws.illinois.edu/workshop/writers/tips/thesis/
http://writing.wisc.edu/handbook/process/thesis_or_purpose/