Question

at which time did marketing emerge?
o during the middle ages
o during the industrial revolution
o during world war i
o during the twentieth century

Explanation:

Marketing as a formal business - related concept emerged in the twentieth century. Before that, basic forms of trade and promotion existed, but the modern - day understanding and structured approach to marketing developed during the 20th century with the growth of consumerism and more complex business environments.

Answer:

During the twentieth century