Which one of the following words or phrases may be a clue that a sentence is inferring cause or effect

How does gatsby smile at nick? why is this important?

This passage from chapter 4 of story of my life is an example of which story of plot

Which is the best example of manipulating an audience through media? a. playing sinister music while interviewing a celebrity b. criticizing a professional athlete without providing reasons c. starting a web form for a discussion about a new app d. filing a complaint against a company for its bad service