The sentence ends with a string of "wh-" noun clauses. These clauses are usually not thoughts, so the final one also needs to not be a question. "Which a single may be the best" is obviously a question format, so it is sensible that " armed forces, armed services, army, https://where-to-buy-copyright-onli13691.luwebs.com/38102290/online-copyright-supplier-things-to-know-before-you-buy