Respuesta :
Correct answer choice is :
D) It helped him predict that the demand for steel to build railroad tracks and bridges would grow.
Explanation:
Scottish-born Andrew Carnegie was an American industrialist who accumulated a destiny in the steel industry then became a significant contributor. Carnegie served in a Pittsburgh cotton industry as a boy before flourishing to the position of division supervisor of the Pennsylvania Railroad in 1859. Andrew Carnegie desired to become a contributor, a person who provides money for good reasons. He believed in the Gospel of Wealth, which meant that rich people were probably bound to give their money back to others in the community.