The correct option is:
D. Though the United States was hampered by an inexperienced military and a lack of money, LaFayette helped the country gain the military and financial support of France.
This option highlights the crucial role that Marquis de Lafayette played in securing French support for the American Revolution, which was vital for the success of the American cause against British forces. His connections and advocacy were instrumental in obtaining military assistance and financial aid from France, which significantly influenced the outcome of the war.