ADAM SMITH'S FIRST PRINCIPLE OF SOUND TAXATION STATES THAT TAXPAYERS SHOULD CONTRIBUTE ACCORDING TO THEIR ABILITY TO PAY. BASED ON THIS, WHICH TAX WOULD SMITH MOST LIKELY FIND TO BE THE MOST FAIR a STATE SALES TAX b FEDERAL INCOME TAX c DOCTOR'S LICENSE FEES d FEE AT TOLL ROADS

FEDERAL INCOME TAX

Explanation:

The most likely tax that follows the principle that states that people should pay based on their ability is the federal income tax. This tax is progressive as the high income earners pay a higher percentage as tax when compared to he low income earners.

The sales tax and doctors license fees aren't progressive, as the rich and the poor all pay same amount. This doesn't align with the principle.

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.

explanation:

aids