What can be correctly claimed of a deductive argument? Choose the correct answer from the options given below.

1.If the premises are true, then the conclusion is probably true

2.If the premises are true, then the conclusion must be true

3.It is unlikely for the premises to be true and the conclusion false

4.The conclusion follows necessarily from the premises

5.It is impossible for all the premises to be true and the conclusion false

A1, 2 and 3 only

B1 and 3 only

C2, 4 and 5 only ✓ Correct

D1, 4 and 5 only

Correct answer: (C) 2, 4 and 5 only

Explanation

A deductive argument guarantees the conclusion whenever the premises are true.

Statement 2 states that true premises make the conclusion necessarily true.

Statement 4 states that the conclusion follows necessarily from the premises.

Statement 5 states it is impossible for all premises to be true while the conclusion is false.

These three express the same necessity that defines validity in deduction.

Necessity rather than probability is the defining feature of deductive support.

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