The correct option is Publish the knowledge base.

After you add new question and answer entries you must Publish the knowledge base to make those entries part of the live, end user facing content. Publishing typically updates the searchable index or the served version so the support endpoint or help center returns the new pairs to users.

Retrain the model powering the knowledge base is incorrect because adding Q and A pairs usually does not require training a machine learning model. Most knowledge base systems store and serve explicit Q and A entries and only require a publish or deploy step to expose changes.

Translate the question and answer pairs into other languages is incorrect because translation is an optional localization step and it does not make the original entries available to end users. Translation only matters if you need content in additional languages.

Run end to end tests against the Q and A endpoint is incorrect because testing is a useful validation activity but it does not itself publish or deploy content. Tests help verify behavior but you still need to perform the publish action to make changes live.

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