Correct option is A
Egoistic suicide arises from a lack of social integration, where the individual feels disconnected and isolated from the social group, leading to self-destruction.
Explanation of options: (a) ✔ Egoistic suicide is rooted in social isolation, as per Durkheim. (b) ✘ This describes fatalistic suicide. (c) ✘ Anomic suicide happens due to sudden change or imbalance. (d) ✘ Altruistic suicide is due to over-integration into a social group.