Question

the last line of a proof represents
the conclusion.
the given information.
the assumptions.
the argument.

Explanation:

In a proof, the last line is where the result or the statement being proven (the conclusion) is presented after working through the given information, assumptions, and the argument (the steps of the proof). The given information and assumptions are starting points, and the argument is the middle steps. So the last line represents the conclusion.

Answer:

the conclusion.