Jacob works for the f. b.i. he was selected for this position because he speaks four languages. in which other profession could he have used his languages? anesthesiologist secret service psychologist security guard

It would be Secret Service because you don't need to speak 4 different languages in order to become a Security Guard or a Psychologist. An Anesthesiologist is someone trained to work with anesthesia and I am pretty sure that you don't need to speak 4 different languages to become that either. Secret Service is similar to FBI and I would think that you would need multiple languages in order to work for them. 

Le  chien is dog in french

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