A marketing lead uploads a quarterly campaign spreadsheet and asks Claude for a one-page performance summary for the board. The summary is clear and professional and includes conversion rates, cost per lead, and total spend for each channel. What is the most appropriate next step before sending it?

Answer: C — Check the conversion rates, cost per lead, and spend figures against the spreadsheet before sending

Figures going to a board are high-stakes, specific details, and they must be checked against the source (c). Having the file uploaded makes errors less likely but doesn't rule out a misread table or a merged row (a). Claude's confirmation of its own work is not evidence (b). Regenerating and choosing on readability judges style, not accuracy, and each version could contain different errors (d).