Factory work was not easy. first of all, it involved long hours. typical factory workers put in twelve-hour days, six days a week, and there were few holidays. moreover, most workers had to do the same simple tasks over and over each day. at the same time, they had to work fast to keep pace with the machines they tended. finally, factory work could be dangerous. fingers, hair, and clothing often got caught in the many gears and belts of machines, making accidents common. also, textile mills were filled with cotton dust, which damaged the lungs of the workers who breathed it in. which of these sentences provides key details?

The correct answer is “fingers, hair, and clothing often got caught in the gears and belts of the machines.”

The sentence that provides key details of the idea of the excerpt is “fingers, hair, and clothing often got caught in the gears and belts of the machines.”

When we are referring to “key details”, it means that it is needed to state the most important information to have a clear picture or representation of the idea to convey. In this case, when the part of the excerpt refers to something as specific as “fingers, hair, and clothing often got caught in the gears and belts of the machines,” it is conveying a very detailed description of the scene.  

length of the cultivating season was not a problem of new england agriculture