The hypothesis is the possible answer to the scientific question that the researchers have made. It is based on scientific knowledge, it must be logical, and it must be falsifiable (you can find data that proves the hypothesis to be false).
To test this hypothesis you have to make a prediction based on it. The prediction is a statement that tells what will happen under certain conditions, for example, it states what is that you expect to happen after you conduct the experiment to prove the hypothesis.
So, the correct answer is a statement.