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OpenStudy (anonymous):

Development of multicellular organisms probably began with the formation of.... A.) bacteria B.) colonies C.) microspheres D.) oxygen

OpenStudy (abhisar):

Hello Briana ! What do u think should be the correct option ?

OpenStudy (anonymous):

Hello!! I think the answer is A.) Bacteria

OpenStudy (anonymous):

@Abhisar

OpenStudy (abhisar):

I think it should be colonies.

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