Answer:
In a way they should and should not
Explanation:
The reason I think that they should is because if something happens and they need help they need to have someone to call or text especially if it is an emergency. Most kids under the age of ten are actually smart the age I think that should have phones are maybe 7 and older.
If you look at a dictionary to substantiate is to support an opinion or claim with proof or evidence. So a Substantiated opinion is an opinion that is backed up with proof.
Hope this helps :)
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