Which title best completes the diagram?

The correct answer is B, as the diagram refers to the requirements for becoming a naturalized US citizen.

Explanation:

A foreign person legally resident in the United States may obtain US citizenship. To do this, it must meet several conditions:

-Detention of the Permanent Resident Card in the United States.

-Possession of resident status for at least five years (reduced to three years if the resident is married to a US citizen).

-Permanent residence in the United States for at least half the time since the applicant has been granted residency status, that is, at least two and one-half years.

-Permanent residence for at least three months in the US state where the naturalization application was made.

-Complete mastery of the English language (read, written and spoken). A test is organized during the naturalization interview.

-Basic knowledge required in American history and government.

-Possession of a good morality, acceptance of the principles of the American Constitution, and good disposition towards the order and the well-being in the United States. This implies that the candidate has not been arrested or found guilty of a serious crime, and that he must support the US system of government.

-The applicant must be at least 18 years of age at the time of submission of the application. For minors, the request must then be submitted by the parents.

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.