Answer:
The correct answer is letter "A": fails to measure all changes in the quality of goods.
Step-by-step explanation:
The Consumer Price Index or CPI is considered the benchmark inflation guide for a country's economy. It uses a basket of goods approach that aims to compare a consistent base of products from year to year focusing on products that are bought and used by consumers daily. Though, the CPI fails in not considering the introduction of new products into the market and the changes in the quality of those products.