How do you check if Karel is facing east?

The method to check if Karel is facing east is accurately represented by the function isFacingEast(). This method directly evaluates Karel's current heading and returns a boolean value: true if Karel is facing east and false otherwise. This functionality is crucial in programming Karel's movements and actions based on the direction it is facing. The other options presented do not correspond to the correct syntax or functionality defined in Karel’s programming environment for checking directions.