Here's a problem to solve: A student investigates how speed changes as a ball travels down a ramp. Measurements taken by computer every second are recorded on a data table. Which diagram will best display the data from this table?

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

- A: a bar graph
 
- B: a line graph
 
- C: a pie chart
 
- D: a pictograph
 