The point \( (11.5, 1) \) is nonviable because you can only buy whole-number amounts of cookies and bags of chips.
In the context of this problem, since \( x \) (cookies) and \( y \) (bags of chips) must be non-negative integers, having a non-integer value for \( x \) (11.5) makes this point invalid for this scenario. Therefore, the correct explanation is:
The point \( (11.5, 1) \) is nonviable because you can only buy whole-number amounts of cookies.