Kaplan Test Prep offers courses and private tutoring arrangements that prepare students for standardized tests, such as the GRE, GMAT, or LSAT (tests that you may take soon).
Kaplan offers students a "Higher Score Guarantee," which essentially promises that your score when you take the test after completing a Kaplan course will be higher than your prior test score (or your "diagnostic" score if it's your first time taking the test).
If it's not, you can take the course again or get your money back.
a. Discuss how this guarantee functions as insurance.
b. Discuss how this guarantee functions as a signal.