Oral language because it is the system through which we use spoken words to express knowledge, ideas, and feelings. Developing ELs' oral language, then, means developing the skills and knowledge that go into listening and speaking—all of which have a strong relationship to reading comprehension and to writing.
I'd say there are two answers here - she must obey her husband's wishes and follow his advice (he tells her not to teach Douglass how to read) and slavery strips her of her innate beliefs and benevolent nature (she used to be a kind and caring person before she got slaves).
I read this story and so I can say its answer should be 4 (She has gained a deeper understanding of her daughter).
The word A. Estimate means approximation.