Question

What do hypotheses, theories, and laws have in common?
data
predictions
explanations
observations

Answer 1

The best and most correct answer among the choices provided by the question is explanations.

Explanations are common in hypotheses, theories, and laws .

Hope my answer would be a great help for you.    
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Answer 2

Answer: The correct answer is- Observation.

Hypotheses is a statement that is hypothetical and can be proved wrong or right with the help of various experiments or observation.

Thories are explanatios of some important feature of nature that are established by collecting facts and observations over time.

Laws describe principles that corresponds to system of rules and regulations that are developed by experimental evidences and observations.

Thus, Observation is the right answer.