6Dec19 morning Q6
0. Which one of the following is the characteristic feature of an argument?
- Option : A
- Explanation : Whether it is valid or invalid is the characteristic feature of all arguments which is tested by determining its truth or falsity on the basis of the Fundamental Principle of Argumentation. The principle says: An argument is INVALID if and only if it is logically possible for the conclusion to be false even though every premise is assumed to be true. Testing the validity of an argument is a three-step process: (i) Each premise as well as the conclusion is symbolized. (ii) A truth table with a column for each premise and a column for the conclusion is prepared. (iii) If the truth table has a row where the conclusion column is FALSE while every row in the premise column is TRUE, then the argument is INVALID. Otherwise, the argument is VALID.
