Explanation: The amount of amplification, or gain, in electronic circuits is commonly expressed in decibels (dB). For voltage gain, the formula is: Gain (dB) = 20 * log10 (V_out / V_in) In this case, the output voltage (V_out) is 2 volts, and the input voltage (V_in) is 2 microvolts (which is 2 x 10^-6 volts). 1. Calculate the voltage ratio: V_out / V_in = 2 V / (2 x 10^-6 V) = 1 / 10^-6 = 1,000,000 2. Calculate the base-10 logarithm of the ratio: log10 (1,000,000) = 6 3. Multiply by 20 to get the gain in dB: Gain (dB) = 20 * 6 = 120 dB Therefore, an amplification from 2 microvolts to 2 volts represents a gain of 120 dB. Options A, B, and D are incorrect as they would correspond to different voltage ratios. For example, 60 dB is a voltage ratio of 1,000, and 100 dB is a voltage ratio of 100,000.