What value represents the prefix "milli" in the metric system?

The prefix "milli" in the metric system denotes a value of 0.001. This is derived from the metric system's use of powers of ten, where "milli" indicates a thousandth of a unit. For example, one millimeter is one thousandth of a meter, or 1 mm = 0.001 m. Understanding metric prefixes is essential for converting between different units and comprehending measurements in scientific contexts. The other options represent different values: 0.01 corresponds to "centi," 0.1 corresponds to "deci," and 1 represents the base unit with no prefix.