Answer: A. Russell's sister takes after their mother, but he does not.
In the story, there is no implication of Russell not being obedient. He is so obedient he performs the job he hates everyday because his mother tells him to do so. There is also no sign of Russell's sister wanting to become a writer.
The author mentions that he has learned all of his mother's maxims as well, so that is not a difference between them. The difference is that his sister feels compelled to say them, and means them, because they align with what she thinks. This is because the sister is more similar to their mother than Russell.
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Sample Response: Because people did not know that yellow fever was caused by the bite of an infected mosquito, they assumed incorrectly that people could catch the disease through touch. To help control the disease, letters were cleaned with vinegar before being sent. This did not work, because it was a false cause-and-effect relationship.
Explanation: