Answer: A. imperfect; not all important determinants of standard of living are incorporated.
Step-by-step explanation:
The gross domestic product refers to the monetary value of the goods and the services which are produced in a nation.
Gross Domestic Product is an imperfect measurement as it excludes non-market transactions such as the activities of mothers etc. Also, it doesn't account for income inequality in the society. Therefore, not all the important determinants of standard of living are incorporated.