Final answer:
The method named 'mystery' that calls the 'turnLeft()' function twice causes an object or robot to turn around, resulting in it facing the opposite direction from where it started, which corresponds to option C) Turns Around.
Step-by-step explanation:
The method in question is a simple piece of code in a programming language, which most likely pertains to a robotic control system or a similar simulation. The method named mystery invokes the turnLeft() function twice. When a robot or an object turns left once, it faces a new direction that is 90 degrees counter-clockwise from its original position. By executing the turnLeft() function a second time, the object or robot completes another quarter turn, totaling 180 degrees from its starting position.
Therefore, the correct answer to what the method does is C) Turns Around. This makes it face the opposite direction from where it started. It does not turn right, face west specifically, nor complete a full circle to face the same direction it started in, as might be implied by the other answer choices given.
The given method mystery() turns left twice. So, it rotates 180 degrees in the opposite direction. Therefore, the correct answer is C) Turns Around.