Mica goes swimming only if Nicole lifeguards. Pedro is free on the condition that Ona goes to the beach. Mica goes swimming unless Ona goes to the beach. Nicole doesn't lifeguard. So, either Pedro is free or Mica goes swimming.
-Working backward from the conclusion of this argument, which of the following is the most likely justification of the last step of the derivation?
A) MP
B) MT
C) HS
D) Conj
E) Add

Question

Quizplus · Accepted Answer

The last step of the argument involves introducing a new element that wasn't previously discussed, which is characteristic of the Addition rule (Add) in logic. This rule allows for the introduction of a disjunction (an "or" statement) to the argument.

Mica Goes Swimming Only If Nicole Lifeguards