Each of the following is a true statement except: a. no nation has a pure market economy b. the black market appears in every nation c. communist nations have a total command economy d. a mixed market is the world’s most common economic system

Among the options given on the question the correct answer is option B.

Every statement given on the question is true except that the black market appears in every nation.

Explanation: Among the options the 1st statement is that no nation has a pure market economy.This is true because there is no existent of pure market economy. A pure market economy means that there will no control of the business by the government. But every nation has some regulatory activities in the business.

The 3rd statement is also true. The communist ruled nation's has total command economy. In this system the government holds the power to decide about anything of the market. There are hardly any power to the private sector.

The 4th statement is about mixed market economy. The mixed market economy is consist of both the pure market and command economy. This economic system is the most common system of the world.

But the 2nd statement is not true.Because the no nation allows the black market in their economy and it is a punishable crime. So the statement about black market is false.

the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.

most drivers errors for every 20 decisions they make while driving.

explanation:

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