Simplify the following text for a Grade 9 native English-speaking person.
Original: The Formula One World Drivers ' Championship ( WDC ) is awarded by the FÃ dÃ ration Internationale de l'Automobile ( FIA ) to the most successful Formula One racing car driver over a season , as determined by a points system based on Grand Prix results .
Simplified: The Formula One World Drivers ' Championship ( WDC ) is the most successful Formula One race car driver of the year . The award is given by the FÃ dÃ ration Internationale de l'Automobile ( FIA ) to the driver who scores the most points during a season .