The suggested answer is C, D.
To effectively represent key metrics on a Qlik Sense app dashboard, it is ideal to choose high-level summary measures that provide a clear overview of the organization's performance. The number of customers provides a straightforward metric for customer base size, which is a crucial performance indicator. Similarly, the number of products sold gives insight into sales volume, another critical measure of business success. Both measures are concise and directly reflect the organization's performance, making them suitable for KPI objects on a dashboard.