Choose the sentence in which the non-restrictive phrase appears in bold.

mattie, whom i've known since preschool, is the only person i know at my new school.
my friend mattie is the only person i know at my new school.
mattie is my oldest friend and the only person i know at my new school.
the only person i know at my new school is mattie—my oldest friend.

Dentify the reasons that support the claim. check all that apply. claim: students should be required to take at least one online class. learning entirely remotely is one option that many schools offer. online classes provide more flexibility in students’ schedules. everyone enjoys using a computer, so online learning is more fun than traditional learning. one online class should be a mandated part of any school’s curriculum. students learn valuable skills they can apply in online college courses.