A tentative prediction about the relationship between variables is a hypothesis (Option C).
A hypothesis is a particular scientific explanation about a particular phenomenon observed in the real world.
Hypothesis may also be defined as plausible explanations of a given observation that allow to make predictive relationships associated with the result of such observations, which also represent a fundamental step of the scientific method, i.e., observation >> question >> hypothesis >> experimentation >> results and conclusions.
A hypothesis must be tested by using the scientific method, which is based on empirical evidence derived from experimental and/or observational procedures.
In conclusion, a tentative prediction about the relationship between variables is a hypothesis (Option C).
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