Context: The passage below describes an experiment. Read the passage and think about the variables that are described.

Sanjay heard that when it was cold outside, a sled would travel farther after it got to the bottom of a hill. To test this idea, Sanjay headed to the sledding hill near his house on a cold winter morning.
When he got to the hill, the temperature outside was 16°F. Starting from the top of the hill, Sanjay rode straight down the hill three times. For each ride, he measured the distance he traveled across the flat field at the bottom of the hill. Then, Sanjay waited until mid-afternoon, when the temperature outside had increased to 43°F. He rode straight down the hill three more times and measured how far he traveled across the field.
Hint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure.
Figure: sledding down a hill.
Which of the following was a dependent variable in this experiment?
A. the temperature at the hill
B. the distance the sled traveled across the flat field
Choose the right answer from the options and respond with its letter.

B