Concept:A digital logic gate accepts one or more input signals and gives exactly one output signal.Explanation:A gate must have at least one input. Some gates, such as an inverter, have only one input. Other gates, like AND or OR, have two or more inputs.In every case, a logic gate produces only a single output. The output depends on the combination of its input states.Thus, the statement that a gate has at least one input but only one output is correct.Answer:C. It has at least one or more inputs but only one output.