The gravitational potential energy of an object is dependent on the object's mass, the strength of the gravitational field, and D) the height of the object.
The formula for gravitational potential energy (U) is given by:
\[ U = mgh \]
where:
- \( m \) is the mass of the object,
- \( g \) is the acceleration due to gravity (strength of the gravitational field),
- \( h \) is the height of the object above a reference point.