Final answer:
In Spanish, the response 'c) por nada' would indicate no need for thanks.
Step-by-step explanation:
When someone does something nice for you and you thank them in Spanish, they would not respond with 'a) De nada,' or 'b) No hay de qué,' as those phrases mean 'You're welcome.' The correct response to show no need for thanks would be 'c) Por nada,' which literally translates to 'for nothing.' Another acceptable response would be 'd) Gracias,' which means 'thank you' but does not directly address the act of kindness.
Learn more about Spanish greetings and responses