Read the sentence below and answer the question that follows.

When a country’s economy becomes more developed, the standard of living usually increases.
The term underlined in the sentence above is best defined as __________.
A.
the total dollar value of all final goods and services produced within a country’s borders in a given year
B.
the expense of the equipment used to increase human capabilities or make people’s lives easier
C.
the level of comfort the average person in a country can reasonably afford
D.
the measure of a country’s economic health and social conditions

Please select the best answer from the choices provided
A
B
C
D