D: Velocity, displacement and force.
Vector quantities are the physical quantities that are defined in terms of both magnitude and direction.
For example: Velocity, displacement and force are vector quantities.
2. Scalar quantities are the physical quantities that are defined in terms of only magnitude.
For example: Velocity, length and volume, density, speed, energy, mass, and time are scalar quantities.
Explanation of incorrect option:
A: Velocity, length and mass.
Velocity is vector quantity but length and mass are scalar quantities because that is defined in terms of only magnitude, not direction.
B: Speed, length and mass.
Speed, length and mass are scalar quantities because that is defined in terms of only magnitude, not direction.
C: Time, displacement and mass.
Displacement is vector quantity but length and mass are scalar quantities because they have been defined in terms of only magnitude, not direction.
