Which factor contributed to the formation of large corporations during the late 19th century?

A. Production could be organized more efficiently on a larger scale
B. Wage levels could be increased when employing a smaller number of workers
C. Businesses could only export to foreign markets with a large amount of capital
D. Government support for businesses was likely in a highly concentrated industy

(A)

Explanation: Production were much more organized during the late 19th century and on a larger scale because of factories. (B) doesn't make sense because wage level were not going up, (C) is wrong because it said "only" to foreign markets, and lastly (D) is wrong because government had less involvement in business (laissez-faire).

the exclusive possession or control of the supply or trade in a commodity or service.