Advertising copy is the main text used in advertisements across print, radio, and television to develop and retain interest in target customers and prompt them to purchase a product within seconds. There are different types of advertising copy like human interest copy, reason why copy, institutional copy, educational copy, suggestive copy, and expository copy as exemplified by Life Insurance Corporation's human interest tagline "Zindagi ke baath bhi, Zindagi ke baad bhi". The document provides a brief overview of what advertising copy is and the different types used in advertisements.