Answer:
- 'Moon rock should be made of the same elements as Earth rock.'
Step-by-step explanation:
A research hypothesis is demonstrated as the proposition or assumption that is meant to explain or elaborate a specific observation that could be tested or verified by the further observation.
In the given question, the research hypothesis that could be constituted from the given theory would be 'Moon rock should be made of the same elements as Earth rock' as it reflects a specific and verifiable proposition/assumption that could be further be speculated or observed to test the truth of this proposition(whether rocks should be made of same elements or not).