Question

The first forms of life on Earth were ________.

a) Prokaryotic cells
b) Viruses
c) Eukaryotic cells
d) Multicellular organisms

Answer 1

The first forms of life on Earth were prokaryotic cells.

Step-by-step explanation:

The first forms of life on Earth were prokaryotic cells. Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles. They originated approximately 3.5 billion years ago and were the only life forms on Earth until eukaryotic cells emerged around 2.1 billion years ago.