Compared grammatically correct and incorrect sentences,  write down what you think is a rule that could explain what makes a sentence grammatically correct or not. 

Adjectives are being adapted to their grammatical gender (el hombre famoso, la mujer famosa) Something like that? Hope i could help!

so what i did was i used google translate and this is what i got. where do you live? what do you do in your free time? what kind of music, food, sports do you like? what is your favorite color? who is your favorite artist? so what they are doing is asking u questions about urself and u have to respond in spanish or english i bealive. hope this : )

corras is the only one that is informal but doesn't follow the suffix rule. correr is the verb. corre is the formal verb form. corra would be used as the formal is corre ended with an a.

your best bet would be corras, it's the only one that is informal but is still wrong