Keep the money in your PayPal account for making payments to other sellers. Withdraw the cash from an ATM with a PayPal debit card. If you enroll in PayPal Preferred Rewards, you'll get back 1 percent of the money spent on purchases.
The topic sentence needs to relate the paragraph to the thesis statement of the essay. However, you need to make sure that your topic sentence strikes a good balance between the broad and the narrow. Don't write too vague or general an idea or you will never be able to discuss it in a single paragraph.
It's a good idea to evaluate your research question before completing the research exercise (Exercise 3) and to ask the writing tutor for feedback on your research question. And you also should check your research question with your course tutor. A topic is what the essay or research paper is about. It provides a focus for the writing. Of course, the major topic can be broken down into its components or smaller pieces (e.g., the major topic of nuclear waste disposal may be broken down into medical, economic, and environmental concerns).