Answer:
D. today's dollars; purchasing power
The nominal value of anything is it's current price or the dollar amount someone is paying for it. For eg if the price of a kg of rice is $3, its nominal value is also $3. The real value is expressed in terms of purchasing power which means that the amount of goods and services that you can purchase from a particular amount of money today compared to a base year in the past. So for example if the base year is 5 years ago and the price of a kg of rice was $1.5, the real value of $3 would be 2 kgs of rice, where as currently if the price of a kg of rice is $3 then the real value of $3 is 1 kg of rice. As purchasing power decreases the real value of money decreases.
Explanation:
