Answer:
1- The proposal would be to improve education in Brazil through full-time school education, where children and teenagers could have different classes and courses, such as courses in foreign languages and professional training, with monetary incentives for children who got good grades.
2- The main challenges foreseen for the inclusion of the integral school in Brazil could be population adhesion, lack of funds and legislative bureaucracy. Such challenges could culminate in school dropouts, lack of resources to hire new professionals, school structure and materials, in addition to a long delay in the approval of the educational change project.
3- The difficulty of solving social problems in any society is a complex task because such problems occur for structural reasons that would impact the way that society organizes itself politically, socially and culturally. There are also institutional problems such as political corruption that makes it difficult to develop a fairer and more egalitarian society for the entire population.
The conflict between the federalists and the anti-federalists took place at the time of the writing and ratification of the US Constitution, that is, the second half of 18th century
The Federalists were in favour of strong federal government and the anti-federalists were in favour of strong state governments.
so the correct answer is: the anti-federalists.
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Models can be conceptual, graphical or mathematical as they are used in science. It allows one to break down a concept into simpler terms with a visual component. A limitation of models in science is that they are usually simplified versions of the real situation or concept.