Read the excerpt from "Sea Life."

This morning Miss Wu wrote the names of the class officer nominations on the board, and there under "Treasurer" was mine! I couldn’t help myself – I glanced over at Jimmy.

Which story element does the author develop in this excerpt?

plot details about the narrator’s first day of school
characterization of Miss Wu
characterization of Jimmy
plot details about the class elections

The author develops plot details about the class elections in this excerpt.

The story element that the author develops in this excerpt is the plot details about the class elections.

To determine which story element the author develops in this excerpt, we need to analyze the information provided. In the given excerpt, the narrator mentions that Miss Wu wrote the names of the class officer nominations on the board, and the narrator noticed their name under "Treasurer." The narrator then mentions glancing over at Jimmy.

From this information, we can deduce that the author is developing the plot details about the class elections. The focus is on the narrator's surprise and reaction to seeing their name as a candidate for the position of treasurer in the class elections. The mention of glancing at Jimmy could be an indication of the narrator's curiosity about how Jimmy might react to this information, but it is not the primary focus of the excerpt.

Therefore, the correct answer is: plot details about the class elections.