Which relationship most likely reflects both correlation and causation?

The more miles I drive, the more I have to spend on gasoline.

The more miles I drive, the more I have to spend on gasoline.

The more hours spent watching TV, the lower the test scores.

The more hours spent watching TV, the lower the test scores.

As the number of sunglasses sold increases, so does the number of snow cones sold.

As the number of sunglasses sold increases, so does the number of snow cones sold.

As sunscreen sales increase, the number of people at the pool increase.

The more miles I drive, the more I have to spend on gasoline.