Question

A scientist wants to use a model to help present the results of his detailed scientific investigation.

Why would a model be useful?
because the model makes the concepts easier to understand
because the model is easy to put together and to use
because the model prevents other scientists from asking questions
because the model requires the audience to pay full attention to it

Answer 1

because the model makes the concepts easier to understand

Answer 2

Because the model makes the concepts easier to understand

Explanation:

It's a common task in scientific world present the results of an investigation to the community. To do that, they make congresses, symposiums, conferences, et cetera. The objective of the scientist is to have a clear and easy to understand explanation.