Investors in the bond market require a return of 8.6 percent on a 10-year bond issued by Dell Industries. That means, they require to be able to earn on average 8.6 percent each year if they hold the bond until maturity. We call this 8.6 percent the bond's .

Yield to Maturity

Explanation:

Yield to maturity is the correct answer because the average annual yield that a person expects to earn is called the yield to maturity.  Or it is the total return on the bond if a person holds the bond till its maturity. Since 8.6 percent is the average return so this is a yield to maturity.