Answer: (D). The unit and direction is missing.
Step-by-step explanation:
Velocity: Velocity is the speed of the object with direction and it is the vector quantity. The unit of velocity is m/s.
Average velocity: Average velocity is defined as the total distance divided by the total time.

Here,
D = Total distance
T = Total time
According to the question:
The unit and the direction is missing in the cyclist's velocity.
Hence, The unit and direction is missing.