Answer:
Qu'est-ce que tu penses de ce qu'ils font?
Explanation:
'Qu'est-ce que tu penses de ce qu'ils font?' roughly translates to 'What do you think of what they're doing?' so the awnser would be the fourth one.
I think it means how many are you in your family.
To form the present tense of an -re verb, drop the -re of the infinitive, like you do for -er and -ir verbs. When you do that, you're left with the stem for the conjugation of the present tense, and you can add the present tense endings specific to -re verbs: -s, -s, nothing, -ons, -ez, -ent.
C. C'est in sandwich fraçais.