Answer:
The doctor said:" That will all pass. You are a fortunate young man. You will play football again like a champion."
Explanation:
Irony is a rhetorical device that shows or means the exact opposite of what is expected of a particular scene or situation. It can be of three types- verbal irony, dramatic irony, and situational irony.
As given in the passage, Hemingway's "In Another Country" is about an American soldier getting physical therapy for his war injuries. And the best example of irony from the passage is when the doctor said "You are a fortunate young man. You will play football again like a champion". This is ironic because as we can see, the speaker/ protagonist clearly stated that "My knee did not bend and the leg dropped straight from the knee to the ankle without a calf", meaning his leg was completely useless. And the doctor's claim that he will play football again is quite the irony for looking at the current condition, there is no way he will even be walking properly.