Answer:
Option C.
An effect of social reforms of the 19th and 20th centuries is the length of a normal work day increased.
Step-by-step explanation:
- In the nineteenth and twentieth century, many industrial and urbanization reforms were achieved as a result of which the length of normal work day increased.
- The agricultural sector also developed rapidly and its outputs increased by the introduction of modern methods and techniques in the agriculture sector.
- The population in the urban centers started to increase. However, the life expectancy of children decreased.