please hive answer from 6-10 i need answers for those questions

6. "An insured municipal bond is safur the debt service reserve fund? why you agree or disagree with safer than an uninsured municipal bond." Indicate 7. Who are the parties to a letter-of-credit-backed responsibilities? 8. a. What are the three types of letters of credit in a municipal bond, and how do they differ? b. Which type of letter-of-credit-backed bond provides the greatest protection for investors? 9. a. What is a prerefunded bond? b. Why does a properly structured prerefunded municipal bond have no credit risk? 10. Give two reasons why an issuing municipality would want to refund an outstanding bond issue