You are an administrator for a Fabric tenant and are currently working on developing a pipeline in Azure Data Factory. As part of this pipeline, you have a stored procedure designed to return two specific metrics: the number of active customers and their average sales for the current month. Your goal is to incorporate an activity into the pipeline that will execute this stored procedure within a warehouse environment. Furthermore, it is essential that the values returned by this procedure are accessible to subsequent activities within the pipeline. What type of activity should you add to achieve this functionality?