Which variable type represents numbers that include a decimal point?

The correct response is that floating-point numbers are the variable type specifically designed to represent numbers that include a decimal point. This distinction is critical in programming and computational applications, as floating-point numbers can express a much broader range of values than integers, including fractions and very large or very small real numbers.

Floating-point representation allows for the precision and range needed in calculations involving decimals. It utilizes a specific format that can store both the base (mantissa) and the exponent, which together permit efficient representation of non-integer values.

In contrast, the other options represent different types of data. Strings are sequences of characters and are not suitable for numerical calculations. Integers refer to whole numbers without any decimal points, thereby limiting their use in contexts where fractional values are required. Booleans represent truth values (true or false) and do not involve numeric representation in any form. Understanding these distinctions is essential for effectively handling data types in programming and engineering contexts.