Answer:
C) inflation and deflation; includes energy and food as part of the market basket of goods and services that it measures
Explanation:
The consumer price index (CPI) measures the average prices of a basket of goods and services during one year, and then compares them to the previous price of that same basket of goods. A lot of different things are included in the CPI basket, for example: cereal, milk, coffee, housing costs, bedroom furniture, apparel, transportation expenses (including gas prices), medical care costs, educational expenses, recreational expenses, toys, etc.
Theoretically the CPI basket should include most of the products that an average person purchases during the year, but that is really difficult to determine exactly.