The conclusion should show the closure of the essay, so it is a summary of the points and arguments. In addition, the conclusion restates the thesis and demonstrates the correspondence between the information, provided in the body paragraphs, and the thesis. Thus, the writer proves that they have provided enough evidence to validate the thesis, so it is important to summarize all points of the discussion or explanation. Neither thesis nor points should be restated exactly, in order to avoid repetition, the writer is supposed to paraphrase.
As a rule, the concluding paragraph contains four or more summarizing sentences, but it should not include any new information about the issue, except the perspectives for the further research of the topic. Statement of perspectives is not mandatory, but highly motivated writers, who have a keen interest in the issue, should express their opinion concerning the development of the corresponding field.
The conclusion might also contain recommendations for the improvement, especially if the writer is assigned to describe a problem or challenge. In this case, it would be useful to provide these suggestions immediately after restating the points, e.g. after writing about obesity, one can conclude: "Contemporary Americans often each high-calorie and unhealthy dishes in fast-food restaurants, which should be obliged to provide the information about the potential influence of their production on the customers' fitness". It is also acceptable to separate the recommendations from the summary.
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