PLEASE HELP ASAP! WILL GIVE BRAINLIEST:

Which prokaryotic organism shows up as the earliest fossils?

A) archaea

B) echinoderms

C) algae

D) cyanobacteria

Respuesta :

I believe it's cyanobacteria. I know it's not echinoderms or algae (since chloroplasts in algae evolved from cyanobacteria). 
The answer is D) cyanobacteria. My science teacher told us yesterday.