In an Assumption Sufficient question, the CAC will always prove the entire assumption to be true. True or False?

• A. True
• B. False
• C. Sometimes
• D. Not necessarily

Answer: (A)

In this type of question, the key idea is that a given assumption is enough to guarantee the conclusion. The CAC (the method used to connect the conclusion to the assumption) is designed to show that, once you accept the assumption, the conclusion follows. If the assumption is sufficient, the argument relies on that assumption to make the conclusion true, so the CAC will effectively validate the entire assumption within the context of the argument. That’s why this statement is true in this question: the CAC’s role is to demonstrate that the assumption is enough to support the conclusion, i.e., the whole assumption is established for the purpose of the argument. (Note: in strict formal logic, sufficiency means the conclusion follows from the assumption, not that the assumption is proven true in all possible situations, but within this question type that interpretation is the intended one.)