Work in physics is done when a force is applied and causes displacement in the direction of the force. The correct answer is that for work to be done, a force must be transferred and the object must move.
In physics, work is defined as the transfer of energy to an object by applying a force that causes the object to move.
The correct answer to what determines whether work is being done is C: In order for work to be done a force must be transferred and the object must move.
For work, in the scientific sense, to occur, a force must be exerted and there must be displacement in the direction of the force.
Formally, the work done is the product of the component of the force in the direction of the displacement and the distance through which the force acts, which is articulated in the equation W = | F | (cosθ) | d |, where W is work, F is the magnitude of the force, cosθ is the cosine of the angle between the force vector and the displacement vector, and d is the displacement.