GitHub Marketplace is used to discover, share, and publish reusable automation, including GitHub Actions created by GitHub, vendors, and the community. Option C best describes this role. Marketplace does not exist only for billing, so option B is too narrow and incorrect. Option A is also wrong because Marketplace does not merely restrict third-party actions to public repositories; action usage is governed by repository, organization, or enterprise Actions policies. Option D is false because Marketplace does not bypass repository permissions or automatically deploy workflows into repositories. In exam terms, Marketplace is part of the automation reuse and action discovery domain: developers use it to find trusted or verified actions rather than building every integration manually. GitHub documents Marketplace as a place to publish and share actions with the community.

The GET /repos/:owner/:repo/actions/runs/:run_id/logs API endpoint is used to retrieve the logs of a specific workflow run identified by run_id. This is the correct method for downloading logs from a workflow run.

GITHUB_WORKSPACE is a default environment variable in GitHub Actions that points to the directory on the runner where your repository is checked out. This variable allows you to access files within your repository during the workflow.

Scheduled workflows in GitHub Actions are triggered at specified times, and they run on the latest commit of the branch that triggers the workflow. This means the workflow will run on the most recent commit on the branch that was active at the time the scheduled event occurs.

The run keyword is used to execute command-line programs and scripts on a GitHub Actions runner. When several commands must execute within the same workflow step, YAML ' s literal block indicator (|) can be placed after run: and the commands written on separate indented lines. GitHub ' s workflow syntax explicitly demonstrates this pattern with npm ci followed by npm run build. The shell keyword does not contain commands; it specifies which shell should interpret the commands supplied through run. Therefore, options B and C misuse the shell property. Option D also lacks the YAML literal block notation required to represent the multiple command lines as the value of run. Option A correctly executes both commands sequentially within the same shell process and is the documented syntax.