Which sentence below uses commas CORRECTLY?

(1 point)
Responses

The safari was expensive, dangerous and exciting.
The safari was expensive, dangerous and exciting.

The travelers saw pterodactyls, bats, and a Tyrannosaurus rex.
The travelers saw pterodactyls, bats, and a Tyrannosaurus rex.

The beautiful green, and gold, butterfly was dead.
The beautiful green, and gold, butterfly was dead.

The sentence that uses commas correctly is: "The travelers saw pterodactyls, bats, and a Tyrannosaurus rex."