Producers are typically plants, so I believe the correct answers would be 2, 3, 4.
A single species that has evolved into several different forms that live in different ways has undergone "b. convergent evolution" since the multiple "divergent" species are seen to "converge" into a single species if you go back far enough in time.
1. 50% will be red
2. 100% will be roan
3. 50% roan and 50% white
