Final answer:
The child-rearing practice illustrated in the engraving is best explained by c. the increasing employment of children in factories during the early stages of the industrial revolution.
Step-by-step explanation:
During this time, as industrialization took place and jobs shifted from the farm to the city, children were often forced to work in factories to contribute to the family income. This resulted in a change in family dynamics, as children were no longer seen as economic contributors and instead needed to be cared for and supported financially. The child-rearing practice illustrated in the engraving can be best explained in the context of the increasing employment of children in factories during the early stages of the industrial revolution.