<P> In 2011, the Free Software Foundation added CC0 to its free software licenses, and currently recommends CC0 as the preferred method of releasing software into the public domain . </P> <P> In February 2012 CC0 was submitted to Open Source Initiative (OSI) for their approval . However, controversy arose over its clause which excluded from the scope of the license any relevant patents held by the copyright holder . This clause was added with scientific data in mind rather than software, but some members of the OSI believed it could weaken users' defenses against software patents . As a result, Creative Commons withdrew their submission, and the license is not currently approved by the OSI . </P> <P> In 2013, Unsplash began using the CC0 license to distribute free stock photography . It now distributes several million photos a month and has inspired a host of similar sites, including CC0 photography companies and CC0 blogging companies . Lawrence Lessig, the founder of Creative Commons, has contributed to the site . Unsplash moved from using the CC0 licence to their own similar licence in June 2017, but with a restriction added on using the photos to make a competing service which makes it incompatible with the CC0 licence . </P> <P> In October 2014 the Open Knowledge Foundation approved the Creative Commons CC0 as conformant with the "Open Definition" and recommend the license to dedicate content to the public domain . </P>

Which of the following best describes the purpose of the creative commons