Option D is the correct answer.

Velocity is a vector quantity because it has both magnitude (speed) and direction, indicating how fast an object is moving and in which direction.

Power, energy, and charge are scalar quantities because they only have magnitude and do not include direction. Power measures the rate of work done or energy transferred, expressed in watts, and has no directional component. Energy, quantified in joules, indicates the capacity to perform work and also lacks direction. Charge, measured in coulombs, represents the electric property of particles and is similarly directionless.