Where is says
No Music No Cellphones No Students
there should be commas in between like
No Music, No Cellphones, No Students
Does that help you?
A proximate cause refers to a direct cause of loss
The best use of punctuation is shown in "Sandy, a wayward puppy, was taken in and adopted by a loving family". The information between the commas is not necessary information to understand the meaning of the sentence. That is why it is separated from the rest of it by means of punctuation.
The other examples present cases in which there is a misuse of the parenthesis. The information included in them ("to the museum" and "beautiful places") are not specifying what has been previously stated. What is more, the last sentence also contains a misuse of the dash.
You are correct! It is Antony who says those lines