A, under the influence of grave and sudden provocation by Z, intentionally kills Y, who is Z's child. A is guilty of:

Hiring or conniving at hiring persons to join an unlawful assembly is an offence punishable under which Section of the Indian Penal Code?

'X' threatens 'Y' that he will post defamatory statements on social media unless 'Y' pays him money. Which offence under the Indian Penal Code has 'X' committed?