The most likely hurdle the recent high school graduate will face is:
It will be difficult to cover start-up costs since banks will be unlikely to loan her money.
As a new graduate with no previous work experience or current income, obtaining a bank loan might be challenging, as lenders typically look for a reliable income source and credit history when considering loan applications. The other options discussed may not be as significant of a hurdle for her situation, especially since establishing a sole proprietorship is generally straightforward and doesn't require approval from investors. Additionally, while understanding taxes is important, it is not typically considered a significant barrier to starting a sole proprietorship.