If the economy adds to its inventory of goods during some year:

A. gross investment will exceed net investment by the amount of the inventory increase.
B. this amount should be ignored in calculating that year's GDP.
C. this amount should be subtracted in calculating that year's GDP.
D. this amount should be included in calculating that year's GDP.

D. this amount should be included in calculating that year's GDP

Explanation:

If the economy adds to its inventory of goods during some year, the amount should be added to the calculation of GDP for that particular year.

D. this amount should be included in calculating that year's GDP.

Explanation:GDP(GROSS DOMESTIC PRODUCT) is a macroeconomic system of measuring the Productivity and efficiency of the productive sector of an economy,it measures the total monetary worth of goods produced and services rendered within the economy in a given period of time under review.

THE GDP OF AN ECONOMY CAN BE USED TO DESCRIBE HOW WELL THE ECONOMY IS PERFORMING.

ALL THE PRODUCTS PRODUCED AND SERVICES RENDERED WITHIN AN ECONOMY MUST BE INCLUDED IN CALCULATING THE GDP FOR THAT PERIOD.