On GitHub, certain actions automatically subscribe you to conversations so that you receive

notifications about further activity in that thread.

Opening a Pull Request or Issue:

Option C is correct because when you open a pull request or issue, you are automatically subscribed

to the conversation and will receive notifications for any updates.

Commenting on a Thread:

Option D is correct because commenting on an issue or pull request automatically subscribes you to

that thread, ensuring you are notified of further comments or changes.

Being Assigned to an Issue or Pull Request:

Option E is correct because when you are assigned to an issue or pull request, you are automatically

subscribed to notifications related to it.

Incorrect Options:

Option A is incorrect because pushing a commit to the default branch does not automatically

subscribe you to conversations.

Option B is incorrect because being added as a repo admin does not automatically subscribe you to

specific conversations unless you engage with them.

Reference:

GitHub Docs: Subscribing to Notifications