Answer : Velocity is speed with displacement
Explanation :
The speed of an object is defined as the total distance covered divided by total time taken.
The velocity of an object is defined as the total displacement divided by total time taken.
The speed is a scalar quantity because it has only magnitude while the velocity is a vector quantity i.e. having both magnitude and direction.
The relationship between speed and velocity is " velocity is speed with displacement ".
Hence, the correct option is (b).