A research hypothesis:
a. predicts the expected results or outcomes of the study
b. defines the theoretical framework for the study
c. is used to determine relationships in a study
d. clarifies the gap in the literature in the study

Option B

Explanation:

Firstly what is a hypothesis?, Hypothesis is an explained fact about a project or event or research with little evidence about it, it is a starting point for such research. From this definition of hypothesis a research hypothesis is a explained fact about a project or event with little evidence about the research and a starting point for future development of such research ,what does it explains ,it explains typical the structures of the research and how to go about carrying out the research, it provides enough information for anyone else to carry on from the result the hypothesis outlines. Based on the answer choices, option b is the best option to the question, in comparison to my explanation.