the inclusion of four propositions followed by a fifth that comes to a conclusion in the preamble exemplifies

The inclusion of four propositions followed by a fifth that comes to a conclusion in the preamble exemplifies  Deductive Reasoning .

Explanation:

Deductive reasoning is the mode of logical reasoning that makes use of deduction to obtain a conclusion about certain premises. Essentially, deductive reasoning is characterized by presenting conclusions that must necessarily be true if all premises are true and if the reasoning respects a valid logical form.

Starting from principles recognized as true (premise major), the researcher establishes relationships with a second proposition (minor premise) to, from logical reasoning, arrive at the truth of what he proposes (conclusion).

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