Final answer:
The factor that did not move children out of the workplace is b. Industrialization, as it initially increased the demand for child labor. The main factors that did contribute to reducing child labor were child labor laws, economic incentives for adults, and educational reform.
Step-by-step explanation:
The option that is NOT a factor that moved children out of the workplace is b. Industrialization. Industrialization was a process that, in many cases, initially increased the demand for child labor because children were often employed to manage smaller machines or conduct tasks that required less physical strength. However, it is important to note that eventually, greater mechanization and the rise of more complex machinery led to the decline of child labor as these jobs required more skill than children possessed.
Nonetheless, the primary factors that contributed to the reduction of child labor were a. Child labor laws, which outright banned or limited the work that children could legally undertake; c. Economic incentives for adults, which helped reduce the need for supplemental income from child labor; and d. Educational reform, including compulsory education laws, that moved children from factories into schoolrooms, emphasizing the importance of education over child labor.