The diagram shows a graph of an object’s weight as it moves through outer space. What is happening to the object? A. It is approaching a less massive object in space.
B. Its mass is slowly increasing
C. Its size is slowly increasing.
D. It is approaching a more massive object in space.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

c) should be the answer.

answermeridional ;