Choose all of the processes from below which describe changes which are independent of the path by which the change occurs.
a) the elevation increase experienced by a traveller travelling from Grand Isle, LA to Denver, Colorado
b) the number of rotations the earth undergoes over a specified period of time
c) the energy evolved when a cube of sugar is oxidized to CO2(g) and H2O(g)
d) the energy released by the combustion of a gallon of gasoline
e) the odometer mileage increase observed by a traveller travelling from Louisiana to Canada
f) the change in the score of a football game as the game progresses
g) the potential energy gained by a satellite as it is shot into a specific orbit