Potential gdp is the value of real gdp when
a. there is no frictional unemployment
b. there is no structural unemployment
c. the unemployment rate is zero
d. the unemployment rate equals the natural unemployment rate

c. the unemployment rate is zero

Explanation:

Macroeconomic equilibrium occurs when the amount of real GDP is equal to the amount of potential GDP given at the intersection of the AD curve with the AD curve. When the real GDP provided is greater than the required amount, reserves are created so that firms can reduce production and prices. If the actual demand exceeds the supply, firms are depleted to increase production and prices. When potential GDP equals real GDP, full employment equilibrium occurs. In this case, AS curve intersects AD and Potential GDP at the same balance point. There are no gaps in this situation.

the answer is true .

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.