The study of motion with regard to forces is known asKinematicsDynamicsActuatorAll of the above

The correct answer to the question is Dynamics.

Explanation:

1. Kinematics refers to the description of motion without considering the forces that cause it. It deals with parameters like displacement, velocity, and acceleration.

2. Dynamics, on the other hand, is the branch of mechanics that explains the relationship between motion and the forces that affect it. It encompasses everything related to how forces influence the motion of an object.

3. Actuator is not a field of study in mechanics; rather, it refers to a device that converts energy into motion.

4. The phrase "All of the above" is incorrect because Kinematics and Actuator do not pertain to the study of motion with regard to forces.

Thus, the study of motion with regard to forces is specifically categorized under Dynamics.