According to the conversation between Jack and Céline, the time of the day he is greeting her is A. morning
According to the given conversation, Jack and Celene are both conversing in the French language.
Based on the greeting, "bonjour", he is telling her "Good morning" and sha replies his greeting and asks him, "How are you?'.
As a result of the language used to communicate, the time of the day is morning.
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