Which sentence below uses commas CORRECTLY?
a.The safari was expensive, dangerous and exciting.
b.The travelers saw pterodactyls, bats, and a Tyrannosaurus rex.
c.The beautiful green, and gold, butterfly was dead.
a.The safari was expensive, dangerous and exciting.
b.The travelers saw pterodactyls, bats, and a Tyrannosaurus rex.
c.The beautiful green, and gold, butterfly was dead.