Which statement best describes one of the new business models that emerged during the second industrial revolution

The second Industrial Revolution started at mid XIX century, but is really consider a phase of the Industrial revolution we all know, is not a rupture between eras, it is more a strengthening and perfectionism of the thechnologies, and  it implies a series of development in Chemistry, electric, oil and Steel industry.

Also another esential process development are the steamed steel vessels, the develop of the plain and the steam locomotive, mass production, some techniques on food preservation and the invention of the electromacnetic phone device.  

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.

i think the answer is a and i hope this ; ))