University president: Research institutions have an obligation to promote research in any field of theoretical investigation if that research shows some promise of yielding insights into the causes of practical problems that affect people' s quality of life. The principle stated by the university president, if valid, most helps to justify which one of the following actions? ['A research institute funds an investigation into the mathematical properties of folded structures that is likely to aid in understanding the structure of proteins that cause disease.', 'A university funds a research position in the physics department that involves no teaching but has the responsibility for managing all the grant applications by members of the physics faculty.', 'A foundation decides not to fund a research proposal in applied mathematics that sought to model certain poorly understood aspects of economic behavior.', 'A government agency funds a research project in astrophysics designed to determine whether there are theoretical limits on the magnitude of planets in distant solar systems.']