"Multiple use" refers to the utilization of natural resources in combinations that will best meet the present and fut...

shunhe on January 26, 2020

Hi @shiyi-zhang,

Thanks for the question! (C) is wrong because while it may strengthen the argument, it’s actually not an assumption required for the argument to be true. Let’s take the negation of (C)—that the present and future needs of the public wouldn’t necessarily be met by designating greater numbers of wilderness areas. The argument can still stand if this is true, since maybe what’s needed is one huge wilderness area. Because the author can still reach her conclusion without (C), (C) is not the required assumption we need. Hope this helps, and feel free to ask any further questions you might have.