The primary objective of the Allied landings was to secure bridgeheads for opening a second front to the rear of German and Italian forces battling the British in Libya and Egypt. However, resistance by the nominally neutral or potentially pro-German Vichy French forces needed to be overcome first.
basically what answer C is saying is that "Are you afraid to perform this act and take the blame for your actions? Knowing that this is what will help you to obtain the throne."
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