B) Cell phones can have a beneficial and educational role in schools.
Explanation:
Cell phones can have a beneficial and educational role in schools. This statement is the claim; all other statements provide evidence to support this claim.
The Answer is A because cell are not helping out education and not allow to research essay or other assignment and can not call family mate unless emergency.
It is B) He's been in town for a week now, but stayed home every evening. The context clues help provide information that he is isolated from everyone else.