The answer to this is curved path
You are supposed to put titles in italics
It refers to the system by which people were physically labeled in concentration camps during the Holocaust.
(The claim states that) Headphones should be modified for a safe volume level to protect hearing. (Some may disagree because) People would like to hear large amounts of volume, that may damage their ears. They may be destined for free-will, and choose to live their life the way they want. So what if manufacturers choose this way of making headphones, they may see some sales drop as many people don't actually care how loud things are.
"A. You know, of course, that she used to dive for her college swim team." does not have any errors in comma usage. "Of course" is almost always surrounded by commas.
