Answer:
a. direction.
Explanation:
Velocity is a vector, so it includes both a) a magnitude and b) a direction.
The magnitude of the velocity is the speed, which is the ratio between the distance covered and the time taken:
[tex]v=\frac{d}{t}[/tex]
However, speed gives only information on how fast is the object traveling. Instead, velocity gives also information on the direction of the motion of the object.