Use either indirect proof or conditional proof (or both) and the eighteen rules of inference to derive the conclusion of the following symbolized argument.

Step	Argument	Justification
1.	(R ? S) ? T
2.	(P ? Q) ? T
3.	R ? P	/ T

\fStep-by-Step Proof: Step 1: Assume 71 (Indirect Proof Assumption) To use indirect proof, we assume the negation of the conclusion: 4.-T (Assumption for Indirect Proof). \f\fStep 4: Analyze Premise 3 (R v P) From Premise 3, R 'V P is given as true. However: s From Step 6, ~ R is true (so R is false). s From Step 8, =P is true (so P is false). If both R and P are false, then R v P must also be false. This contradicts Premise 3. Step 5: Contradiction The assumption =T has led to a contradiction with Premise 3. Therefore, the assumption =1" must be false. Step 5: Contradiction The assumption =7 has led to a contradiction with Premise 3. Therefore, the assumption =T must be false. Step 6: Conclude T Since =7 is false, the conclusion T" must be true: 9.7 (Conclusion by Indirect Proof). Final Answer T (Derived using Indirect Proof and the eighteen rules of inference)