The following argument is an instance of one of the five inference forms MP, MT, HS, DS, Conj.Identify the form. $R⊃RD≡∼U\begin{array} { l } ( \mathrm { R } \supset \mathrm { R } ) \supset ( \mathrm { D } \equiv \sim \mathrm { U } ) \\\frac { \mathrm { R } \supset \mathrm { R } } { \mathrm { D } \equiv \sim \mathrm { U } }\end{array}$

A) MP
B) MT
C) HS
D) DS
E) Conj

Question

The following argument is an instance of one of the five inference forms MP, MT, HS, DS, Conj.Identify the form.

R⊃RD≡∼U\begin{array} { l } ( \mathrm { R } \supset \mathrm { R } ) \supset ( \mathrm { D } \equiv \sim \mathrm { U } ) \\\frac { \mathrm { R } \supset \mathrm { R } } { \mathrm { D } \equiv \sim \mathrm { U } }\end{array}

A) MP
B) MT
C) HS
D) DS
E) Conj

Britney Williams · Accepted Answer

Final Answer : A, Explanation :   This argument is an instance of Modus Ponens (MP), which takes the form: If P, then Q; P; therefore, Q. Here,   ( R ⊃ R )  ( R \supset R )  ( R ⊃ R )   is P, and   ( D ≡ ∼ U )  ( D \equiv \sim U )  ( D ≡∼ U )   is Q.

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