Help Jill is giving a presentation about how Cesar Chavez led a movement to create a farm workers union in California. Which sentence from her speech describes cause and effect?

“We will discuss similarities and differences between farm workers and other labor movements.”
“We will study a timeline of events that led to the creation of a farm workers union.”
“We will examine how a strike led to the eventual formation of a farm workers union.”
“We will explore how poor working conditions were addressed by the creation of a union.”