주어진 문장 다음에 이어질 글의 순서로 가장 적절한 것은? A technique that enables an individual to gain some voluntary control over autonomic, or involuntary, body functions by observing electronic measurements of those functions is known as biofeedback. (A) When such a variable moves in the desired direction (for example, blood pressure down), it triggers visual or audible displays―feedback on equipment such as television sets, gauges, or lights. (B) Electronic sensors are attached to various parts of the body to measure such variables as heart rate, blood pressure, and skin temperature. (C) Biofeedback training teaches one to produce a desired response by reproducing thought patterns or actions that triggered the displays.