Which of the following is one of the three numeric data types for decimal numbers?

The numeric data type for decimal numbers known as FixedDecimal is designed to handle precise decimal values, important for applications that require high accuracy in calculations, such as financial data. This data type allows users to perform arithmetic operations while maintaining control over the scale and precision, meaning it can represent numbers with a defined number of digits both before and after the decimal point.

In contrast, the other options do not pertain to decimal numeric types. Boolean refers to true/false values, String is a data type for sequences of characters, and Date is for representing calendar dates. None of these options are capable of representing decimal numerical values with the required level of precision that FixedDecimal offers. Thus, FixedDecimal stands out as the appropriate choice for handling decimal numbers effectively.