No there shouldn't be a comma before the"or"
It allows the reader to see how the character came to be who he or she is currently, it creates realism in the text, it creates tension between the narrator and the character, etc.
Answer:
I thought I knew the answer.
Sorry!!
To shirk means to avoid doing something.
So, if there are any choices, I'd choose that someone would be tempted to shirk a difficult task, or something you just don't feel like doing.
