(?N ? R) • (F ? ?G) $\frac{F \vee \sim N}{R \vee \sim G}$
A) Constructive dilemma.
B) Invalid.
C) Denying the antecedent.
D) Modus tollens.
E) Destructive dilemma.

Question

Quizplus · Accepted Answer

Constructive dilemma is a valid argument form that has the following structure:If P then Q.If R then S.Therefore, if P or R then Q or S.The given argument matches this structure, so it is a constructive dilemma.

(?N ? R) • (F ? ?G) F∨∼NR∨∼G\frac{F \vee \sim N}{R \vee \sim G}R∨∼GF∨∼N​

(?N ? R) • (F ? ?G) $\frac{F \vee \sim N}{R \vee \sim G}$