What primarily motivates Abigail's actions throughout the play?

Abigail's actions throughout "The Crucible" are primarily motivated by her desire for revenge against Elizabeth Proctor. Abigail is deeply in love with John Proctor, and when she discovers that John is committed to his wife, Elizabeth, her feelings turn into a burning desire to remove Elizabeth from the equation. This motivates Abigail to falsely accuse Elizabeth of witchcraft, fully intending to have her executed so that she can rekindle her relationship with John.

Her actions stem from a mixture of personal desire and resentment, making revenge a driving force in her choices. This motive propels the plot forward and illustrates themes of jealousy and the lengths to which individuals will go for love, ultimately leading to tragedy for many characters involved.