The income approach calculates the
a) national average
b) national value
c) national incomenone of the above

National income

Explanation:

 Income method of gross domestic product (GDP) measurement is focused onto the accounting fact that almost all economic spending should be equivalent to the amount of revenue earned by the output of all consumer products and services.

This method also supposes that an economy has 4 major production determinants and all earnings must go to any of these 4 sources. Thus a simple calculation of the gross tangible value of commerce over a span could be made by combining all revenue sources.

Thus, from the above we can conclude that the correct option is C.

The answer is National Income

Explanation:

I got it right on edge 2020

engaging in financial planning?

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the answer is true.  i do believe this is the answer because of the amount of wrecks people get into each year.  if you double this with avoiding those so said wrecks, that would make you a "skilled" driver.