Which three of the following actions will automatically subscribe you to a conversation on GitHub?

GitHub automatically subscribes users to conversations when their direct involvement indicates they may need future notifications. Being at-mentioned in a thread subscribes the mentioned user because GitHub treats the mention as a direct request for attention. Opening a pull request also subscribes the author because they own the proposed change and need updates about reviews, comments, checks, and merge activity. Commenting on an issue or pull request subscribes the commenter because they have participated in the conversation and may need follow-up notifications. Deleting a branch does not represent participation in a specific conversation, and changing repository visibility is an administrative repository action rather than a conversation-level activity. Automatic subscriptions help users stay informed about discussions relevant to them.