"Choice substance" in chemistry, "favorite material" in general, "pet subject" in education and "preferred matter" in physics are English equivalents of the French phrase matière préférée. Context makes clear which translation of the feminine singular phrase suits. The pronunciation will be "ma-tyehr prey-fey-rey" in French.
It means, " How dare you fart in my cooler."
I thing you got it all wrong it u translate you get "How silent the activity prefer Jean-Marc parent silent when small" ans. 2 Well, I think the questioner has a keyboard with a sticky 'e'. Five letters are missing from the question, all of them 'e's. The translation of the real question is 'What was Jean-Marc Parent's favourite activity when he was little'.