The correct options are The notifications inbox on the GitHub.com website, The notifications inbox in GitHub Mobile which syncs with your GitHub.com inbox, and An email client configured with a verified email address.

The website inbox aggregates updates from repositories, organizations, and teams in one place. It supports filtering, saved views, and triage actions so a developer can keep up with activity without visiting each project individually.

The mobile app presents the same inbox and keeps it synchronized with the web experience. You can receive push alerts and triage notifications on the go and your actions reflect across both places.

Email is supported as a delivery channel when the account has a verified address. You can tailor which events generate messages and you can read and respond from your email client to stay current without opening each repository.

The Google Cloud Pub/Sub topic option is incorrect because GitHub does not deliver user notifications directly to that service. While custom integrations are possible with webhooks or external tooling, it is not a built in notifications destination.

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