Les musulmans cele brent le ramadan tous les ans.
a. pourquoi celebrent-ils le ramadan?
b. qui celebre le ramadan?
c. ou celebrent ils le ramadan?
d. a quelle heure celebrent-ils le ramadan?

I don't speak French so I translated them to English and it seems there is something wrong. The question in English according to Google Translate is "Muslims celebrate Ramadan every year.", I don't get it. How is that a question? Did you get something wrong or what? I want to help but something seems weird here.

B. which is translated into who celebrates the holiday Ramadan
And the statement states that "les musulmans" celebrate Ramadan

Est-ce que vous voulez voyager en france? c. oui, je veux y voyager.

1. la rentrée is the first day back to school in the fall.
false (la rentrée is the first day back to school in summer)
la rentrée est le 3 septembre c'est encore l'été, l'automne est le 22 septembre)

2. in france, students take an exam at the end of their high school education. if they pass it, they can go to the university.
true

3. le bac is the test that is taken every year at the end of the year.
false
(en fin de terminale, les lycéens passent le baccalauréat)

4. french teenagers do not generally get part-time jobs because their homework keeps them plenty busy.
false

5 teenagers cannot drive in france until they are 18-years-old.
true
(conduite accompagnée : 15 ans)

6. the homes in france are generally made of different materials than most homes in the united states.
true