Hiltlers plan of attack became clear to the nations of europe when what occured

its B

Explanation:

why u ask well they are trying to trick u that it's A but look at it closely the Munich pact said that Germany would take no more land from anyone so he signed it then later he just said ha...I'm Hitler dont trust me anyways its B as Germany's biggest threat was the Soviet union with such a large army of they interfered early on the war they wouldnt be able to hold them back as for Poland if they invaded Poland without a pact Russia would see it as a threat and most likely go in to help Poland further more that is why the pact made it so they split Poland:>

entering that problem on the tube you may come up with an answer

no because we were not ready for war