6.) B
7.) A: Proof of your ability to pay if you are at fault, or liable for a collision
The correct answer choice is answer B) Cell phones have lots of games on them that can entertain students during "downtimes."
Each other argument would be very helpful to both students and adults, so they would be relevant to the argument. Hope this helps!
The answers are as follows
Does the shape of the dewdrop depend on the temperature of the surface?
Is the material of the surface responsible for the shape of the dewdrop?
Does the shape of the dewdrop depend on the moisture in the atmosphere?
The other two answers are purely based on opinion, and does not actually effect the shape of the dewdrop in any way.