Final answer:
The question pertains to finding the total displacement of a journey, considering differing velocities and durations. Since displacement is direction-specific, the final displacement would involve adding up individual displacements and is found through physics.
Step-by-step explanation:
The question involves finding the total displacement for a motorist's trip and is thus related to the concepts of displacement and average velocity in physics. Displacement refers to the change in position of an object and is a vector quantity, meaning it has both magnitude and direction. The average velocity is the total displacement divided by the elapsed time and is also a vector quantity. To determine the total displacement over the trip, one must know the distances traveled in each direction and subtract any distance made in the opposite direction. As no specifics of the velocities or directions are given in the problem statement, we cannot provide an exact answer from the given options. However, to find the total displacement, one would typically sum up individual displacements taking into account their directions.