One word to describe a fast selling book​

What do the excerpts have in common? both point out the tragic nature of situations in which children make journeys without their parents. both describe what immigrant children must do to survive when traveling to the united states. both explain why most children want to leave central america without their parents. both indicate the tragic problems and their consequences that children in central america must face.

Match each type of troublesome language with its correct description

Which secondary effect of advertisement happens when a customer is satisfied by a product and buys it for a second time?