majority of consumers do not believe advertising claims, marketing homework help

i need a help to answer this 2 question in 2 paragraph secretly each 350 words from the slide lecture with useful examples and reference

Is it true that the majority of consumers do not believe advertising claims? Why does advertising continue to be used?
Media fragmentation and digital technology have had an impact on the advertising industry in recent years. How do you feel this will impact on advertising campaigns in the next 10 years?