Question

the french revolution grew more violent mainly because radicals reacted to
the national assembly falling apart.
prices rising to an all - time high.
rumors of foreign intervention to end the revolution.
prisoners running rampant after release.

Explanation:

During the French Revolution, radicals became more violent in response to rumors of foreign intervention. Foreign powers, such as Austria and Prussia, threatened to intervene to restore the monarchy. Radicals feared that foreign armies would end the revolution and bring back the old, oppressive regime. This fear led to a more extreme and violent phase of the revolution.

Answer:

rumors of foreign intervention to end the revolution.