The strongest evidence you can provide to argue your claim is facts.
Salaried employee receives a fixed amount of money ,regardless of specific hours they work.
The part of Ernest Hemingway's short story "The End of Something" that is the best example of rejection of traditional beliefs is C. when Nick says love is not fun.
The traditional belief would suggest otherwise - however, by denying the thrill of love, Nick is getting rid of this innate traditional belief. The other examples do not really show this type of rejection, they represent other things that can be found in the story.
The conductor urged "All musicians should continue to practice for the remainder of the week."
This one looks the best to me. The only thing is there should be a comma next to, "urged"