Determine Whether the Argument Is Valid or Invalid $\lor$

question 34

Multiple Choice

determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
-1. J $\lor$ (M $\lor$ L)
2) (∼J ⊃ M) ⊃ K
3) K ⊃ N
4) ∼J • ∼L / N

• A) Valid
• B) Invalid. Counterexample when K is true and J, L, M, and N are false
• C) Invalid. Counterexample when M is true, and J, K, L, and N are false
• D) Invalid. Counterexample when K and K are true and L, M, and N are false
• E) Invalid. Counterexample when K and M are true and J, K, and N are false

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