4 5 points
What is the best way to revise the sentence below?
Since Kirby and his brother are new to the school we need to introduce them to their classmates and welcome them into our school family.
Kirby and his brother are new to the school and, we need to introduce them to their classmates and welcome them into our school family.
Since Kirby and his brother are new to the school, we need to introduce them to their classmates and welcome them into our school family.
Since Kirby and his brother are new to the school, we need to introduce them to their classmates, and welcome them into our school family.
Kirby and his brother are new to the school so we need to introduce them to their classmates and welcome them into our school family.