Explanation: The prefix "micro" is part of the International System of Units (SI) and represents a factor of 10⁻⁶. This means that a "micro" quantity is one-millionth (1/1,000,000) of the base unit. Therefore, to find the value of a quantity expressed with the "micro" prefix, you would divide the numerical value by 1,000,000. For example, 1 microvolt (µV) is 1/1,000,000 of a volt, and 1 microamp (µA) is 1/1,000,000 of an amp. These prefixes are essential in amateur radio for expressing very small measurements, such as signal strengths or capacitance values. Option B describes the prefix "mega" (10⁶). Option D describes "milli" (10⁻³). Option C is incorrect as SI prefixes denote multiplication or division, not addition.