Answer: Topical
Explanation: Speech which centers on issues or ideas which are distinct but related should be engaged in a topical manner. Sullivan's address is based on the types of student loan. Loan is the subject which encompasses the focal point of his speech which may have several distinct types. Therefore, the distinctive differences between the the various loan tyles should take a topical organization with each type of loan defined and distinguished from the other. The different types of loan a student can take include, Federal loans, private loans and refinance loans.