Answer: The slope of a velocity-time graph represents acceleration.
Step-by-step explanation:
Acceleration is defined as the rate of change of velocity with respect to time. It is expressed in the units of

Mathematically,

For the given options:
Distance-time graph gives us the value of speed.
Velocity-time graph gives us the value of acceleration.
Displacement-time graph gives us the value of velocity.
Hence, the slope of a velocity-time graph represents acceleration.