Final answer:
The quote concerning Morrie’s disease emphasizes the critical advancement of his illness and its threat to his lungs, a vital organ for survival.
Step-by-step explanation:
The phrase “Morrie’s disease was now dangerously close to his surrender spot, his lungs,” illustrates the severity of Morrie’s illness and signifies the disease's advancement to a life-threatening stage. The term “surrender spot” metaphorically denotes the critical point beyond which the body cannot cope, particularly his lungs, a vital organ. While each option provided has its merits, the most relevant interpretation based on the context given is that the quote highlights the severity of Morrie's illness. It is clear that Morrie's condition is encroaching upon his lungs, which are essential for breathing and sustainment of life, hence illustrating the physical impact of his disease.