Beverage company representative: The plastic rings that hold six-packs of beverage cans together pose a threat to wild animals, which often become entangled in the discarded rings and suffocate as a result. Following our lead, all beverage companies will soon use only those rings consisting of a new plastic that disintegrates after only three days’ exposure to sunlight. Once we all complete the switchover from the old to the new plastic rings, therefore, the threat of suffocation that plastic rings pose to wild animals will be eliminated.
The argument depends on which one of the following assumptions?
(A) None of the new plastic rings can disintegrate after only two days’ exposure to sunlight.
(B) The switchover to the new plastic rings can be completed without causing significant financial hardship to the beverage companies.
(C) Wild animals will not become entangled in the new plastic rings before the rings have had sufficient exposure to sunlight to disintegrate.
(D) Use of the old plastic rings poses no substantial threat to wild animals other than that of suffocation.
(E) Any wild animal that becomes entangled in the old plastic rings will suffocate as a result.
Premise 1: Wild Animals get entangled in the plastic rings and suffocate, causing a threat to their lives.
Premise 2: Companies will switch to new plastic rings that will disintegrate after only three days’ exposure to sunlight.
Conclusion: Once the companies switchover to new plastic rings completely, the threat of suffocation that plastic rings pose to wild animals will be eliminated.
Now, Premise1 + Premise2 + Assumption (Answer choice) = Conclusion.
For conclusion to be valid, the correct answer choice must address the following question: what will happen to the animals between the three days before the plastic rings disintegrate? Can the new plastic rings cause threat to wild animals before it disintegrates?
(A) Does not address how the new plastic rings will completely eliminate the threat to wild animals.
(B) Financial hardship to the companies is out of the scope of the argument.(C) Correctly connects the premises with the conclusion.
(D) Neither addresses the conclusion nor related to the premises. Uses extreme language: old plastic rings poses no substantial threat
(E) Same reason as (D) and Extreme language: Any wild animal that becomes entangled
Thus, the correct answer is C.
Learn to walk before you run.