Explanation:

- Homicide: Generally involves the unlawful killing of a person, which can be a ground for exclusion in legal matters such as inheritance, if a person responsible for wrongdoing tries to benefit from it.

- Slavery: Engaging in slavery is a serious violation of human rights and can be grounds for exclusion in various legal contexts, preventing individuals from profiting from such heinous acts.

- Estoppel in Succession: Refers to preclusion from asserting a right or fact in a legal claim concerning succession due to the individual’s actions, preventing inconsistencies.

- All of these: Each mentioned ground can individually or collectively serve as reasons for legal exclusion or disqualification in specific contexts.

Answer: Option:4 - All of these