Correct answer: D). Support a hypothesis.
A conclusion may be defied as the sum of all the arguments to draw the inference from the data obtained from the research or the experiment.
In a scientific study the conclusion summarizes the result, which are obtained from the data collected during the experiment, which can be in support of the hypothesis or the contradictory to the hypothesis proposed during the study.
Null hypothesis play a very important role in the study as it accept or reject the null hypothesis, which give very useful information about the study.