Which of the following will increase if an objects height above earth increases
a- the kinetic energy
b- thermal energy
c- potential energy
d - nuclear energy

Gravitational PE is given by = mgh 

Here, mass (m) of the object is constant, and so is acceleration due to gravity (g). Therefore what we need to increase is hieght (h). 

Well, If you do 'Work' on an object to displace it to a higher position, the hieght increases, and thus the Gravitational potential energy of the body increases. 

Or in simple words, if you put an object at a higher place than the initial, then the gravitational Potential energy of the body increases... 

Gravitational PE is given by = mgh 

Here, mass (m) of the object is constant, and so is acceleration due to gravity (g). Therefore what we need to increase is hieght (h). 

Well, If you do 'Work' on an object to displace it to a higher position, the hieght increases, and thus the Gravitational potential energy of the body increases. 

Or in simple words, if you put an object at a higher place than the initial, then the gravitational Potential energy of the body increases... So Answer Is A

~Hope This Helps :)
Need More Help With Question Just Inbox Me 
Also Rate, Give Thanks, And Mark As Brainiliest. 
Thank You ;)