Final answer:
The highest interest rate the consumer could have over the life of the loan is 8%.
Step-by-step explanation:
The adjustable-rate mortgage (ARM) has an initial rate of 6%.
The rate cap of 2/6 means that the interest rate cannot increase by more than 2% in any given adjustment period and cannot exceed 6% over the life of the loan.
So, the highest interest rate the consumer could have over the life of the loan is 8%.