Ahistorian is interested in studying the role of women during the industrial revolution. he finds a recently published secondary source that includes the information in the box below. this information would be most for which of the following? middle- and upper-class women during the 19th-century industrial revolution often worked for charities or became activists pushed for social reforms, such as labor reforms and gender equality a. locating additional primary sources about women in the industrial revolution b. determining whether the author of the primary source had any biases c. understanding the historical context of a 19th-century women's rights poster d. contextualizing the differences between 19th- and 21st-century authors.