Jefferson's use of four premises followed by a conclusion in the preamble is an example of

Jefferson's use of four premises followed by a conclusion in the preamble is an example of a literary device named deductive reasoning.

Explanation:

Reasoning process from one or more premises (statement) to reach a logically confined conclusion is known as deductive reasoning.

The following is an example of an argument that uses deductive reasoning:

1. All star are immortal. (First premise)

2. Sirius is a star. (Second premise)

3. Therefore, Sirius is immortal. (Conclusion)

Deductive reasoning gives a valid conclusion to the argument.