Here's a problem to solve: A student observes the time it takes a marble to roll down a ramp four times. Which of these displays will best communicate the student's observations?

Among the 4 following options, which is the correct answer?

- A: a pie chart with four different sections
 
- B: a line graph with continuous data points
 
- C: a bar graph with a bar for each trial
 
- D: a table with four rows and four columns
 