Which article would we use before a singular noun that ended in -tion?

Ineed with this fast! and if possible, can somone show me how to use the words "meilleur vs. mieux"? these are french questions! fill in the blank with the word that best completes the sentence. les fraises sont que les haricots verts (green beans). - mieux - meilleur - meilleures - meilleurs decide if the following statement is grammatically correct or incorrect. il est mon mieux ami. correct incorrect decide if the following statement is contextually correct or incorrect. l'ours vole. correct incorrect fill in the blank with the word that best completes the sentence. henri joue aux échecs que son frère. - meilleur - meilleure - meilleurs - mieux decide if the following statement is grammatically correct or incorrect. mon frère, c'est le meilleur! correct incorrect fill in the blank with the word that best completes the sentence. béatrice est étudiante. - le meilleur - meilleur - meilleure - la meilleure decide if the following statement is grammatically correct or incorrect. madame dupond fait de meilleurs gâteaux au chocalat que madame duchamps. correct incorrect decide if the following statement is grammatically correct or incorrect. maman cuisine (cooks) mieux que papa. correct incorrect decide if the following statement is grammatically correct or incorrect. paul joue au tennis mieux que marie. correct incorrect decide if the following statement is grammatically correct or incorrect. le lait est meilleur que le café. correct incorrect