The correct option is Copilot builds the summary by evaluating the code diff, the recent commit history, and any natural language text in the pull request description and comments.

This is accurate because Copilot Enterprise generates a pull request summary by reading the code changes in the diff and by using the surrounding context from the most recent commits. It also considers natural language context in the pull request description and any discussion so the summary reflects both what changed and why it changed.

Copilot will automatically approve and merge a pull request if its generated summary reports no issues is incorrect because Copilot does not take repository actions such as approving or merging. It only provides assistive summaries that humans use during review.

Copilot needs manually written commit messages before it can create a pull request summary is incorrect because while commit messages can add useful context the feature does not depend on them being present. It can summarize from the diff and the pull request text and discussion even if commit messages are sparse.

Copilot can produce a pull request summary even when no commits have been pushed and there are no code changes is incorrect because the summary is based on the pull request diff and related context. Without code changes there is nothing substantive to summarize.

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