Which factor changes the layout of large cities during the second industrial revolution?

(a.) the location of coal mines and ore deposits leading cities to rebuild neighborhoods

(b.) the desire of middle class for parks, department stores, and wider streets

(c.) the desire by city planners to integrate different social classes and ethnicities

(d.) the increased popularity of single-family homes among the lower classes

While the first industrial revolution contributed to the growth of industry, second industrial revolution contributed to the expansion of the use of electricity, oil, coal, textiles, steel. All this is again, contributed to the independence of the location, the location of the workforce, the easy acesses of the workplace due to the use of the railway, the possibility of work at night due to the invention of electricity and bulbs, etc. The population grew due to labor demand, but the working conditions were improved unlike those during the first Industrial revolution such as health care, social protection, etc. In such circumstances, the need of a population, middle class, labor force,  for more humane living conditions in the neighborhood grew, the improvement of everyday environmental conditions.

The answer is: B.

i think it was   tsar alexander ii