Different sources are aimed at different audiences. sometimes a source can be directed at more than a single group of people.
( a. historical magazines b. personal journals c. documentary films) are usually aimed at the general population across the globe. some sources may have a very specific audience. ( a. a historical novel b. a literary journal c. an autobiography) can be specifically aimed at students or scholars with a background in literature.

Different sources are aimed at different audiences. Sometimes a source can be directed at more than a single group of people. Personal journals are usually aimed at the general population across the globe. Some sources may have a very specific audience. A literary journal can be specifically aimed at students or scholars with a background in literature.

Explanation:

Personal magazines often portray general subjects such as curiosities, cooking, and other types of information that are of interest to the general public. This type of magazine usually has a wide audience because it can cover subjects of interest to the entire population, or at least most of the population. For this reason, "Personal Magazines" should be the option to fill in the first blank in the question.

On the other hand, a literary magazine is a source of information for a specific audience because it covers only one type of subject. The public that will be interested in this type of information will probably be students or academics with a background in literature.

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.

it was bribing i think i might be wrong though