Answer :
Final answer:
A line plot is the most suitable graph to depict the survey results among middle school students on the most challenging subject.
Explanation:
A line plot would best show the results of the survey on which subject is most challenging for middle school students. A line plot is a simple way to represent data where each data value is shown as a point above a number line. It can easily display the frequency of responses for each subject and allow for a visual comparison of the levels of challenge.
Learn more about types of graphs for representing survey results here:
https://brainly.com/question/44120081