Answer: D. A prominent scientist uses the hypothesis that the universe is much older to guide a scientific investigation.
Step-by-step explanation:
The scientific theory is the proposed description for the cause of a natural process. It is supported by the evidences that are the outcomes of the experimental trials.
A scientific theory can be modified by conducting the research using different methodology, technology and by molding the research question or hypothesis slightly different from previous research.
According to the situation, the scientific theory related to the primitive universe has given. Certain facts are available related to universe. Thus a hypothesis can be framed so as to prove the scientific theory by conducting the scientific investigation involving experimental trials. The results should be valid to be inclusive in modifying a theory.