What is the economic term for the practice of assigning small parts of a complicated job to individual workers who sepcialize in doing just their small part?

Which of the following is true of website content? it should be refreshed periodically to keep customers coming back. once the content has been written and proofread it shouldn't be changed. grammatical errors are not a problem because the customer visits the site to purchase a product, not check the site's grammar. it should be limited to text and shouldn't include multimedia.