Final answer:
The best strategy for the Armed Services Committee in its oversight role of the military, given the information provided, would be holding public hearings to question key officials from the Defense Department about the reported cost overruns and seeking transparency.
Step-by-step explanation:
The best strategy for the Armed Services Committee in its oversight role of the military, given the information provided, would be option C: holding public hearings to question key officials from the Defense Department about the reported cost overruns and seeking transparency.
This strategy would allow the committee to gather information, question officials directly, and provide an opportunity for transparency and accountability. Public hearings would also help ensure that the facts are made known to the public and prevent any attempts to conceal important information.
By choosing this strategy, the Armed Services Committee would be fulfilling its oversight role by investigating the rumors and holding the Defense Department accountable for any cost overruns.