The answer could be race car since it is read the same backwards as forwards.
The answer is the first option: We live on the same street.
The nominative case takes subject pronouns only, since the pronouns are the subjects of the sentences. They are: I, you, he, she, it, we, you, they.
Options b, c and d have object pronouns - them, me and him - acting as subject pronouns and, consequently, as subjects to the verbs, making the sentences grammatically wrong.
