A. The dialogue in which Mrs.Hale explains what is hidden in Minnie's box
Your answers would be chromosome and gene!
The answer is B. Tan is presenting the example <em>"limited English"</em>, which is just <em>one of many</em> other terms she heard before, to express how bad they seem. Because, when people deem those whose knowledge of the Mother Tongue <em>is not as the native speaker</em>, therefore is limited, they are defining everything as limited, even their speaking perceptions.
The interview is like an informal and formal one. A lot is expected to an interview. It doesn't really have to be formal or not because everything is subjective. It is informal compared to an essay. It is formal compared to a speech.