Open-Source Community Has Members Who Post Their Work on to the Community

Multiple Choice

Open-source community has members who post their work on to the community site for the benefit of others. If you use their software, you can refer to others or donate additional development code to the community. The foundation of this community is based on the concept of

A) reciprocal altruism.
B) kin selection.
C) audience inhibition.
D) the empathy-altruism hypothesis.