A consultant is working on a project that requires the use of Omnistudio tools to...

Decision Matrices and Expression Sets are used to perform calculations, apply conditional logic, and evaluate business rules in OmniStudio.

The primary benefit (A) is that they enable calculations on matrix lookups and variables.

Decision Matrices allow for defining complex rules based on multiple conditions (e.g., determining discount percentages based on customer type).

Expression Sets allow for calculations and formulas to process data dynamically.

B. Facilitate the creation of custom objects – Decision Matrices and Expression Sets do not create Salesforce objects; they only manipulate and evaluate data.

C. Allow for the creation of custom fields – Custom fields are created at the Salesforce object level, not via Decision Matrices or Expression Sets.

D. Enable the creation of custom code – OmniStudio is a low-code/no-code platform, meaning these tools are designed to replace the need for custom Apex or JavaScript.

Comprehensive and Detailed In-Depth Explanation:Why not the other options?? Salesforce OmniStudio Reference:

Decision Matrices Overview

Expression Sets in Calculation Procedures