In lines 29-34 Shylock gives his reason.
"Yes, to smell pork; to eat of the habitation which your prophet, the Nazarrite, conjured the devil onto! I will buy with you, sell with you talk with you, walk with you and so following; but I will not eat with you, nor pray with you."
Shylock's reasons are to do with his own religious beliefs.
One thinks that life is difficult the other knows how to live a living
They won’t grow well it’s just a saying
Starting with A it might describe the main character but can you tell who the main character is? For B. it seems likely since he is dying and that was the strong point of the poam. but for C. it has nothing to do with more of a Setting feel. then something more with character and something being solved. B is most likely for how I can see it.