If a body taken from the equator to the pole at the same height level, its potential energy will
(a) remain the same
(b) increase
(c) decrease
(d) become zero

Dear Student,
We know,
Potential Energy =  mgh
If the mass of the body and height is constant, then the potential energy of the body depends on the value of g. And we know that the value of g is greater at poles than at the equator. Therefore, when a body is taken from the equator to the pole at the same height level, its potential energy will increase.
option (b) is correct.
Regards