Final answer:
The word 'mouth' is the correct translation for the underlined word in the sentence 'Il faut une bouche pour manger.' in French.
Step-by-step explanation:
Mouth is the correct translation for the underlined word in the sentence 'Il faut une bouche pour manger.', which means 'You need a mouth to eat.' in English. The word 'bouche' refers to the body part that is used for eating and speaking. In this context, it signifies the importance of having a mouth for the action of eating.
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