Answer: (B) External
If it were internal, then it would be "Man Vs. Self." It would be in his mind. But he is fighting nature. He is fighting something other than himself. Something outside. (Not literally.)
please state what passage/poem this is from so i know what "line 4" is
"Where’s Potpan, that he helps not to take away? He shift a
trencher? He scrape a trencher!"
I believe that's what you are looking for