True, there are 100 United States senators.
The two criteria of abnormal behavior are subjective discomfort and inability to function normally
Subjective discomfort is one sign of abnormality when the person experiences a great deal of subjective discomfort or what we call emotional distress while we engage in a particular behavior.
While inability to function normally is a behavior that does not allow a person to fit into society or function normally can also be called and labeled as abnormal.
The correct answer is a hypothesis
In the scientific method, a hypothesis can be defined as the provisional or attempted solution to a given problem. The level of truth attributed to such a hypothesis will depend on how the empirical data collected support or not what is stated in the hypothesis. This process, known as empirical contrasting of the hypothesis, can be carried out through confirmation (in the case of universal hypotheses) or verification (in the case of existential hypotheses).