Which context describes a difference of rational numbers?

A football player gains yards on a play
A football player looses yards on a play
The teams score increased when scoring
The teams score did not change during the game

A football player gains yards on a play

The context that describes a difference of rational numbers is when a football player gains yards on a play or loses yards on a play. In this situation, the change in yardage can be represented as a positive or negative rational number, depending on whether the player gained or lost yards.