Respuesta :
I believe the answer is B. Hope I helped! ;) If you have anymore questions, feel free to ask!
The second alternative is correct (B).
Since the Agricultural Revolution, when land productivity has increased considerably, more food has been available to the population and fewer people were needed to produce it. With the arrival of the Industrial Revolution, many people from the countryside went to the cities in search of work. The increase in employment and the higher invoice increased the size of the population and consequently the demand for factory products.