People should be able to get a tattoo without their parents permission at age 16 possible Reasons?

In many countries 16 year old's can drink and in the United States they are allowed to drive. Since they are bestowed all of this responsibility, shouldn't they also be able to pick what they want to do with their bodies?

Explanation:

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

hi,   i believe the outlines that were supposed to be showing at the sentences, are not. could you highlight them somehow?