Answer:b. nominal income increased, but their real income decreased
Explanation:
Nominal Income is income at the current market prices without adjustment for inflation.
Real income is income that has been adjusted for inflation.
The spouse 's inability to purchase the same basket of goods with the 6% increase shows the effect of inflation. It was the spouse nominal income that increased.
If it were the real income, she would be able to purchase the same basket of goods with the increase because her income would have been adjusted for the effect of inflation.