The correct option is B anything
Here, 'anything' is correct because pronoun 'anything' is used instead of something in negative sentences and in questions.
'Something' is used to mention a thing that is not known or mentioned by name, a thing that is thought to be important or worth taking notice of or to show that a description or an amount, etc. is not exact. Example: They are working on something to do with the environment.
Pronoun 'nothing' is used for something that is not at all important or interesting. Example: He did nothing to save his mother.
Pronoun 'everything' is used for the situation now or the most important thing. Example: His family is 'everything' to him.