Which one of the following is a tentative answer to a research question?

Correct option is D

Ans (d)
Sol. Operational definition: This refers to the specific way in which a concept or variable is defined and measured in a research study. It is not a tentative answer but a methodological tool.
Validity: This pertains to the accuracy and credibility of a study or the extent to which a measurement reflects what it is intended to measure. It does not represent an answer to a research question.
Objectives: These are the goals or aims of a research study, outlining what the researcher intends to achieve. They are not answers but rather the purpose of the investigation.
Hypothesis: This is a tentative and testable statement or prediction about the relationship between variables in a research question. It serves as the foundation for conducting experiments or analyses to confirm or refute it. Therefore, this is the correct answer.