According to the Purple Earth hypothesis, in what order did photosynthesis first occur in the three different domains? From earliest to latest: a. archaeal photosynthesis, bacterial photosynthesis, eukaryotic photosynthesis b. archaeal photosynthesis, eukaryotic photosynthesis, bacterial photosynthesis c. bacterial photosynthesis, eukaryotic photosynthesis, archaeal photosynthesis d. bacterial photosynthesis, archaeal photosynthesis, eukaryotic photosynthesis x .