Final answer:
The soldiers' arrival at Emily's grandfather's home is context-specific, but Topthorn and Joey deserved 'rest and care' after serving during wartime. Option number a is correct.
Step-by-step explanation:
The soldiers must have come to Emily’s grandfather’s home for a reason specific to the context of the story, which is not fully provided in the question. However, the second part of the question relates to what the German doctors felt Topthorn and Joey deserved.
Given the services they provided during wartime, Topthorn and Joey deserved rest and care. After taking care of so many German soldiers, it was acknowledged that these animals had earned the respect and compassion to be given time to recuperate, which aligns with choice 'A. Rest and care.'