Which of the following must be true if the manufacturer's prediction is to prove accurate?
(A) Freon can be replaced with the new refrigerant without releasing any Freon into the atmosphere.
Using negation: If the new refrigerant releases Freon while replacement, then the conclusion will break down. Also, if the alternate refrigerant can be replaced without freon release , it would not cause further damage to the ozone layer
(B) The damage already done to the ozone layer is not of environmentally significant proportions.
Irrelevant. We are not measuring how significant the impact is. Just not deteriorating the situation.
(C) The atmosphere can reverse the damage to the ozone layer caused by the past use of Freon.
Irrelevant . Beyond the purview of the question/argument
(D) The new refrigerant can counteract the damaging effects of Freon on the Earth's atmosphere.
The manufacturer states that the new refrigerant will prevent further damage, remedying the past damage is beyond the purview of this discussion
(E) The new refrigerant causes no environmental damage of any kind when it is released into the atmosphere.
Even if this is true, we are concerned about only the damage done to the ozone layer and not the environment in general