Nstantaneous speed is measured . A. At a particular point in time B. Before the object begins to move C. Over the duration of a trip D. While the object is slowing down

. At a particular point in time.

Explanation:

Instantaneous velocity is the velocity of an object in motion at a specific point in time. This is determined similarly to average velocity, but we narrow the period of time so that it approaches zero. If an object has a standard velocity over a period of time, its average and instantaneous velocities may be the same. Instantaneous speed is the magnitude of instantaneous velocity

i'm on my way to history not a mistory.