Answer:
Option: b. the acceleration of factory production and increased activity in the mining and railroad industries.
Explanation:
The second industrialization began in the late 19th to early 20th century. It was known for its advance in technology in industries which helped in increasing the production of goods. The increase of factory production, with the help of mining, and railroad supported the new industrial economy. By the expansion of the railroad resulted in a reduction of the time and money it took before to move large goods.