Choose 1 option.

Option A is correct because this is a mobile rendering limitation, not a data or filter issue. Salesforce documentation for reports and dashboards on mobile describes differences and limitations between desktop and the Salesforce mobile app. When a dashboard component appears on desktop but not in the mobile app, the consultant should first check mobile dashboard support and component compatibility rather than assuming that the report data is missing.

The question states that the funnel charts appear on desktop, which strongly indicates that the underlying reports and reporting periods are valid. If the data were missing for the selected reporting period, the chart would fail or show no data consistently, not only on mobile. Option C is therefore not a good fit. Option B is also incorrect because dashboard filters can affect what data is shown, but they do not make an unsupported chart type render in the mobile app.

Salesforce Help also discusses making dashboards available in mobile workflows and notes that mobile dashboard behavior depends on how dashboards are embedded and rendered in the Salesforce mobile app. For this scenario, the consultant should recommend replacing the funnel chart with a mobile-supported visualization or providing an alternate dashboard component for mobile users. Therefore, the correct answer is that funnel charts are not supported in the mobile app.