Explanation
The two OmniStudio tools that the consultant should recommend to meet these requirements are: Calculation Matrix and DataRaptor Extract. A Calculation Matrix is a tool that can perform complex calculations based on multiple input variables and output values. The consultant can use a Calculation Matrix to look up the unit price using the product code, the grade, size, and then multiply the unit price by a discount factor. A DataRaptor Extract is a tool that can retrieve data from a Salesforce object or invoke a Salesforce API. The consultant can use a DataRaptor Extract to get the product code, grade, size, and discount factor from Salesforce

Explanation
The consultant should design the OmniScript solution using the Save property to allow the user to stop and resume a process at a later time. The Save property is a property that determines whether an OmniScript can be saved as a draft and resumed later from where it was left off. The consultant can enable the Save property on an OmniScript to allow the user to stop and resume a process at a later time, without losing any data or progress.

Explanation
When designing OmniScripts, the best practices that should be followed to optimize performance and user experience are:
Use a single DataRaptor to save the information: Instead of using multiple DataRaptors to update the account information after each step, it is better to use a single DataRaptor at the end of the OmniScript to save all the information at once. This reduces the number of database operations and improves performance.
Combine the three steps into one step: Instead of having three separate steps to capture the required information, it is better to combine them into one step with a simple layout. This reduces the number of page transitions and improves user experience.
The suggestions that are not best practices are:
Create a reusable OmniScript for this process: This may not be necessary if the process is specific to creating new billing accounts and not used by other OmniScripts. Creating a reusable OmniScript may add complexity and maintenance overhead.
Configure the save for later property: This may not be useful if the process is short and simple and does not require the user to resume it later. Configuring the save for later property may add unnecessary storage and retrieval logic.

Explanation
The consultant should design the FlexCard solution using card filter and multiple FlexCards to meet these requirements. A card filter is a property that determines which records are displayed in a FlexCard based on certain criteria. The consultant can use card filter to display only the cases with a specific status, such as Open, Awaiting Closure, or Closed. A FlexCard is a tool that can display data and actions in a card format. The consultant can create multiple FlexCards for each case status, and customize the fields and actions accordingly. The consultant can also use custom style to apply different borders for each case status