Final answer:
The necessary details to calculate the object's average velocity over the 3-second interval are missing. It is impossible to determine the correct answer without additional information or a graph indicating the object's displacement and time.
Step-by-step explanation:
To find the object's average velocity over a given time interval, you need to consider the formula for average velocity, which is the total displacement divided by the total time. Given that the provided information does not include specifics about displacement or time beyond 3 seconds after the start of travel, and since none of the additional information provided seems to directly answer the question, it appears that the necessary details to calculate the average velocity are missing.
However, the question format implies there may be a scenario or a graph provided that was not included in the question details. Without that specific information, we are unable to calculate the average velocity from the start of travel to 3 seconds later and therefore cannot confirm which answer choice is correct.