What is a scenario lead ?

If the author of the gift of the magi had made the reader aware of the gifts that jim had purchased in the beginning of the story this would be an example of

Within a farewell to arms, what would be the best definition of the word “regiments”?

Which members of the press did nixon say have been the hardest on him? a. the television news agencies. b. newspapers c. tabloids d. public radio !