Which of the following is the main evidence of life in the early universe?

A.) Dinosaur fossils

B.) Rock layering

C.) Plant remains

D.) Cyanobacteria

A) Dinosaur fossils because they were proven that there was life before us. we also found out that our old skulls had dinosaur teeth in the heads. that showed us that we were on the food chain. but now we aren't because we now have protected cities.