Who had the idea to study humans as groups rather than as individuals?

V. C. Wynne-Edwards and Konrad Lorenz were the first authors to raise the concept of altruism. This was later reiterated by  David Sloan Wilson, E. O. Wilson and Elliott Sober in 1994 whose works referred to social organisms such as ants.

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this