What does the multicellular Volvox and unicellular Chlamydomonas suggest about the evolution of multicellularity?A. That multicellularity evolved twice in plantsB. That multicellularity arose as an early adaptation involving the clumping of unrelated individualsC. Gene duplication events could be important for the evolution of multicellularity because the new genes are free to changeD. Multicellularity leads to distinct tissue types Solution Gene duplication events could be important for the evolution of multicellularity because the new genes are free to change..