How did the success of the american revolution contribute to the french revolution?
it led the french to seek an alliance with the americans to dethrone louis xvi.
it inspired the french to launch their own revolution for liberty and equality.
it encouraged the french to adopt the government system of popular sovereignty.
it caused many french nobles and clergy to move to the newly independent united states.
it made the french vulnerable to attacks, invasions, and threats from the united states.

I was in doubt between the first two alternatives, but I would choose the second (B).

In the eighteenth century occurred the dissemination of the Enlightenment ideology, which motivated the struggle of several nations against the action of monarchical regimes, influencing the two revolutions.

However, victory in the United States led to the proclamation of the Declaration of Rights (1776), which has ideological similarities to the Declaration of the Rights of Man and the Citizen (1789). Both defend that the political institutions have origin in the popular power, that is, that the power must emanate of the population. The ruler must represent popular sovereignty in his mandate.

the committees of correspondence were the american colonies’ means for maintaining communication lines in the years before the revolutionary war. in 1764, boston formed the earliest committee of correspondence to encourage opposition to britain’s stiffening of customs enforcement and prohibition of american paper money. the following year, new york formed a similar committee to keep the other colonies notified of its actions in resisting the stamp act. in 1773, the virginia house of burgesses proposed that each colonial legislature appoint a committee for intercolonial correspondence. the exchanges that followed built solidarity during the turbulent times and bring about the formation of the first continental congress in 1774.