Explanation: An AND gate is a fundamental digital logic gate whose function is based on Boolean algebra. Its output state depends entirely on the state of all its inputs. For an AND gate, the output will only transition to a logic "1" (often representing a high voltage or "true" state) if, and only if, *all* of its inputs are simultaneously at a logic "1". If even one input is at a logic "0" (low voltage or "false" state), the output of the AND gate will remain at a logic "0". Therefore, option B correctly describes this behavior. Option A is incorrect because an AND gate outputs a "1" when all inputs are "1". Options C and D describe characteristics more typical of other logic gates, such as OR gates (C) or NOR gates (D), not an AND gate. Understanding these gates is crucial for comprehending digital circuits in radio systems.