Jacob described two layers of earth's atmosphere. layer a: contains the air we breathe layer b: absorbs x-rays which statement is most likely true? layer a is the troposphere and layer b is thermosphere. layer a is the thermosphere and layer b is troposphere. layer a is the exosphere and layer b is the thermosphere. layer a is the thermosphere and layer b is the exosphere.

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.