"They eat the baguettes."
Translation:Elles mangent les baguettes.
Article "Les" is masculine or feminine so baguette is indeed feminine but that does not change the article.
"They" can be feminine or masculine or mixed. So when you translate "they", you can say "elles" or "ils" until you get another hint that the persons eating the baguettes are men or women.
Actually I think there's a problem with this question. I selected both the "Elles" and "Ils," options, but was informed that only the "Elles" answer was correct.
Then, a subsequent question in this lesson asks to translate "Ils mangent les baguettes" and the answer is "They eat the baguettes." Which contradicts the earlier question.
I'm confused... or the question is not configured with the correct answers.