Question

multiple choice question
around 4 billion years ago, the first ______ formed.
o vertebrates
o cells
● eukaryotes
o comets

Explanation:

Around 4 billion years ago, the first cells formed. Vertebrates evolved much later. Eukaryotes also evolved after the first - simple cells. Comets are celestial bodies and not related to the formation of life - like entities on Earth around that time.

Answer:

B. cells