ANSWER: He wants Congress to increase funding for Parkinson's disease research.
Michael J. Fox is a famous Hollywood actor who was diagnosed with Parkinson's Disease. He delivered a testimony before the senate to convince them to increase the funding for the research on the said disorder.
Among the options, Fox never addressed the Hollywood nor the public in his testimony so it should automatically not be considered. The Congress is also not the appropriate group to conduct researches so Fox would never have that purpose.