To create an objective summary of the passage, the selected sentences should provide key information about Christine de Pizan and her contributions without redundant phrases. Here are three suitable options:
B: Christine de Pizan was the first woman writer who earned a living by writing. D: She overcame obstacles like being a widow at 25 and raising 3 children in the Middle Ages and portrayed women in a positive light all the while giving advice in her books. C: She advised the rich women to run their estate while they were away on business or were traveling for other reasons.
These selections highlight her significance as a writer, her personal challenges, and her impact on women's roles.