By allowing mobile devices in school, educators help students expand learning outside of the classroom.

A. Allowed to use mobile devices in school, students are also able to expand their learning outside of the classroom.

B. Educators helped students expand their learning outside of the classroom by allowing mobile devices in school.

C. To help students expand their learning outside the classroom, educators allowed using mobile devices in schools.

D. Allowing the use of mobile device in school is the best way of expanding students' learning outside the classroom.