Wealthy industrialists who lived opulent and ostentatious lives during the late nineteenth century contributed to the period's nickname, the

Gilded Age

Explanation:

Gilded Age is a period in American history that is characterized by the lavish styles of living of the wealthy Americans, and the increase in philanthropism.

The nickname"Gilded Age" was coined by Mark Twain in 1873, and it is widely considered as the period in American history, in which a fast pace transformation took place, in every aspect of the American society including the economy, technology, and social perspective of the American customs and traditions.

b is the correct answer

plz give me brainliest i never get one : (

explanation:

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.