Question

read the summary about factory work during the industrial revolution. with the development of new technologies and manufacturing processes, the nature of factory work changed. now, machines could do the heavy labor formerly done by men. this meant that women and children could work in factories. in fact, factories sometimes hired entire families. they earned hourly wages. while this could bring in a steady income, that income was not high. women earned less than men, and childrens wages were especially low. the underlined sentence identifies a central trend. provides some key details. makes clear the writers opinion. states the main idea of the summary.

Explanation:

The summary discusses the changes in factory - work nature during the Industrial Revolution, including who could work (women, children), the replacement of human labor by machines for heavy work, and the low wages of workers. It presents these details to convey the overall situation of factory work at that time.

Answer:

Identifies a central trend.