In John Steinbeck's novella "The Pearl," when the doctor finds out about Kino's great find and gets news about the baby, he responds in a way that reflects his opportunistic nature. When Kino tells the doctor that the baby is improving, the doctor responds:
B. That a scorpion sting can cause trouble after showing signs of improvement.
The doctor implies that although the baby seems to be improving, there is still a potential for serious complications, illustrating his manipulative and greedy character.