The answer is B. Cell membrane and cytoplasm
Through a cut or an injury where any skin has been broken.
An infection through an animal's bite or sting.(Like the West Nile Virus which spreads though mosquito bite, or Rabies though an infected mammal's bite).
Can be inhaled or consumed and go from the lungs into the other organs causing harm internally.
The given passage depicts the chivalric value that Gawain is displaying in the excerpt is - loyalty to his king
He is loyal to the king and says he will stand by the king. This show his devotion and dedication towards the king. This proves his loyalty towards him.
So the correct answer is loyalty to his king.