Night covered underneath the tree as he waited for the rain to stop his brother was getting impatient and wanted Mike to hurry up and the example which story element has the most influence over the other story elements. Would it be the setting the plot, the characters or the theme?

In this case, the story element with the most influence over the other story elements would be the setting. The fact that it is night and it is raining sets the stage and influences the characters' actions (i.e., waiting for the rain to stop) and the progression of the plot. It creates a sense of urgency and contributes to the atmosphere of the story.