Period After Follow-Up Fragment That Continues a Question

In testimony, when a follow-up utterance is phrased as a question but is actually a non-interrogative fragment continuing the previous question, end it with a period rather than a question mark. The fragment is merely a shortened form of an imperative (e.g., 'Approximately.' is short for 'Tell me approximately.'). If the reporter hears a distinctly questioning inflection — suggesting the speaker is genuinely asking — use a question mark instead.