The OmniStudio tool that the consultant should recommend to meet this requirement is Grouped Calculation Matrix. A Grouped Calculation Matrix is a tool that can perform complex calculations based on multiple input variables and output values within groups. The consultant can use a Grouped Calculation Matrix to define the input variables, such as state and other factors, and the output values, such as rates. The Grouped Calculation Matrix can then apply rules and formulas to calculate the rates for each state separately, but using the same formula