I do not agree with the statement "the school ‘s current policy should be changed to allow students to carry them".
Students should use cell phones for :
i. additional learning outside their school curriculum,
ii. developing skills via watching tutorials on online etc,
iii. developing research skills by finding relevant information.
However, hardly few students use cell phones appropriately.The major chunk of students use mobiles in wrong ways, like, watching bad content, playing online games, passing time on social media. All such things decrease the productivity of the students & fill their mind with lot of un-necessary content.
Hence, I strongly feel, cell-phones should be banned in school. Also, their usage should be restricted at homes too.
The second option. Trust your goddess
Outflow is the answer assuming that the underlined word is influx.
"Living in a large home is the best situation for a child." is the correct answer.
