Decide whether the sentence is grammatically correct or incorrect as written. voy a pie cuidadosomente.

This is a sentence written in present with the 1st person in singular Yo (I), although the subject is not explicitly written (this is acceptable in spanish language).

Nevertheless, the adverb cuidadosamente is incorrectly written as cuidadosomente.

Therefore this sentence is incorrect.

The correct sentence is:

I walk carefully

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