During the 1800s what changed with the factory workforce that resulted in many women going to work as teachers?

The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

During the 1800s what changed with the factory workforce that resulted in many women going to work as teachers was that many men started to form Union labors to express themselves and made their voices heard about the many injustices lived in the factories. Workers labored under unhealthy conditions, in areas with poor ventilation, They worked long hours a day and received a low salary with no medical package.

Married women stayed in the house taking care of the children but unmarried women started to study and receive an education. This meant having more job opportunities outside the home than married women. That is why some educated women became schoolteachers at schools while men still trying to get better working conditions at the factories.

to provide for the common defense to form a more perfect union to promote the general welfare

your answer would be (a)