Answer:
C.
Explanation:
Based on fossil evidence, prokaryotes were the first inhabitants on Earth, appearing 3.5 to 3.8 billion years ago during the Precambrian Period.
The oldest prokaryotic and eukaryotic organisms formed during Precambrian era.
The events that occurred during Precambrian era are:
The accepted explanation of how eukaryotic cells evolved from prokaryotic organisms is known as the endosymbiotic theory.
According to the endosymbiotic theory, eukaryotic cell organelles like mitochondria and chloroplasts descended from separate bacteria that eventually developed symbiotic relationships with other cells.
To learn more about Precambrian, evolution, and endosymbiotic theory here,
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