What tragic event occurs between Ethan and Mattie in Ethan Frome?

In "Ethan Frome," the tragic event that occurs between Ethan and Mattie is their attempt to commit suicide. This moment is pivotal in the narrative, encapsulating the themes of despair, unfulfilled longing, and the oppressive nature of their circumstances. The act symbolizes their desire to escape the stifling reality of their lives, marked by duty and unrequited love.

Ethan and Mattie's deep feelings for each other are thwarted by societal expectations and personal obligations, primarily towards Ethan's ill wife, Zeena. Their tragic decision demonstrates the extent of their desperation and the depth of their emotional turmoil. The scene emphasizes the broader themes of isolation and entrapment that run throughout the novel.

The other options do not align with the central plot. Moving to another town would suggest an opportunity for change, which is contrary to the characters' circumstances. Inheriting a fortune or getting married secretly would imply a positive resolution to their struggles, which is absent in the story, ultimately leading to a tragic and heartbreaking outcome.