The period known as the gilded age was marked by
a. economic growth and a lack of jobs.
b. economic problems and a lack of jobs.
c. economic growth and changing technology.
d. economic problems and changing technology.

C. economic growth and changing technology.

Explanation:

The Gilded Age was a period in the United States, enduring from the 1860s to 1900, where happened a quick and significant change in issues of the economy, society, governmental issues, and innovation such as:

Shifting from an agrarian to an industrial economy, which led many moved into American's big cities, small businesses grew larger, the corporation became bigger, the enterprise turned into the predominant type of business association, industrialists, brokers and lawmakers delighted in phenomenal riches to the detriment of the common laborers, A national transportation and communication network was made, among others.