Answer: On mange le petit déjeuner à 8H.
Explanation: 8H is 8 am. Le petit déjeuner is breakfast.
<u>le déjeuner</u> is lunch, eaten usually around <u>midi</u> whichnos noon.
<u>le dîner</u> is dinner, which may be eaten around 7 or 8 pm in France, but they use the 24-hour time so those would be 19H or 20H.
<u>le goûter </u>is "snack" or "afternoon tea" which is usually served in the late afternoon.