Final answer:
To find the time interval with the greatest average speed, compare the distances traveled in each interval; the greatest average speed corresponds to the greatest distance covered divided by the time. Without specific distances for each time interval, it's impossible to answer definitively.
Step-by-step explanation:
To determine which time interval the object was moving with the greatest average speed, we would need to look at the distances traveled during each time interval and compare them. Average speed is calculated by dividing the total distance traveled by the total time taken. Unfortunately, there is insufficient information provided directly in the question to calculate this as the exact distances covered in each time interval are not given.
However, assuming this question is based on a provided graph or additional data we do not have, you would generally look for the steepest slope on a position-time graph or the largest distance over time interval in the given data to find the greatest average speed. For example, if on a graph you saw that the object traveled a greater distance between 2 s and 3 s than in the other intervals, then that would be when the object had the greatest average speed.