The single most important concept in the Creative Commons approach is the idea of a spectrum of possibilities between all rights reserved (a conventional copy-right) and no rights reserved (being in the public domain, where anybody is free to use material in any way the person pleases). Review the structure of the following four sentences and choose the one that does the best job of emphasizing the importance of the "spectrum of possibilities."
a. Conventional copyrights, in which the creator reserves all rights to a work, and the public domain, in which the creator gives up all rights, represent two black-and-white extremes.
b. Between the all-or-nothing extremes of a conventional copyright and being in the public domain, Creative Commons sees a need for other possibilities.
c. The primary contribution of Creative Commons is enabling a range of possibilities between the extremes of all rights reserved (conventional copyright) and no rights reserved (public domain).
d. The black-and-white choice of all rights reserved (conventional copyright] and no rights reserved (public domain] does not meet everyone's needs, so Creative Commons is developing a range of possibilities between these two extremes.