The statement taken from the paragraph is most likely to be an opinion rather than fact is "Humans will never travel to planets around even the nearest stars. "
Explanation:
"Humans will never travel to planets around even the nearest stars" is a conclusion that the writer has made after presenting all the information that has its fundament in real data from scientific facts since all the other points are proved and presented with details that are part of astronomy studies around the world.
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).
