Find the time interval, given that the average speed is 3m/s and the distance is 12m

answer: the answer is a

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

there are no components of a physical goal mentioned on the list of choices that you've provided.