The feature that can be used to meet this requirement in an Integration Procedure is Loop Block. Loop Block allows the designer to iterate over a collection of data and perform actions on each item. In this case, a Loop Block can be used to loop over each contact record in the list and perform a multi-step calculation using Calculation Actions or Calculation Procedures. Batch Action is not a feature in Integration Procedure, but a type of Action element that can perform bulk operations on data. Conditional Block is used to specify a condition that determines whether the actions inside the block will run or not. DataRaptor Transform Action is used to transform data from one format to another using templates.

Explanation
The two FlexCard features that the consultant should recommend to meet these requirements are Datatable and Repeat Block. A Datatable element can display a list of records in a tabular format, with columns for each field and rows for each record. The consultant can use a Datatable element to display the contacts for an account, with options to edit or send a message. A Repeat Block element is a container that can display multiple instances of a FlexCard based on a data source. The consultant can use a Repeat Block element to display a FlexCard for each contact, and use a condition to apply a blue border for the primary contact

Explanation
The FlexCard feature that the consultant should recommend to meet this requirement is a Datatable element with the Group By property. A Datatable element is an element that can display data in a tabular format, with columns and rows. The consultant can use a Datatable element to display the cases for an account, with columns for case status, case number, subject, etc. The Group By property is a property that allows grouping data by one or more fields, such as case status. The consultant can use the Group By property to organize the cases by case status, so that Escalated cases appear first, followed by Active and Closed cases