Answer:
Choices are not provided.
However, we can establish a logical relationship between these two variables.
We know that the phone track the number of steps and the distance. Now, depending on the distance, the number of steps will be defined. That is, the more distance, more steps would be needed, that's how the app works.
It would be wrong if we say that the number of steps depends on the distance, because, you can make steps, however, that doesn't imply you are moving, you can simulate the movement without displacement. To avoid that error, the app uses a proportional relationship where the steps depend on the distance traveled.