* Personne n'habite ici. (No one lives here.)
* Il n'y a rien ici. (There's nothing here.)
The choice between "rien" and "personne" depends on the context:
* "Personne" is used when referring to people.
* "Rien" is used when referring to things or the lack of anything.
In this case, both answers are grammatically correct, but the choice depends on the intended meaning.