Balancing requires the center of mass of the system to be at the pivot Steps: - The object is non-uniform, so its center of mass (CM) is offset from the geometric center. - An extra weight is added near the left end to balance on the pivot, indicating the object's CM is to the right of the pivot. - The added left-side weight creates a counterclockwise torque that counters the clockwise torque from the object's right-side CM. - Balance occurs when the total CM of object plus weight aligns vertically with the pivot, placing the object's CM right of the pivot. Why D is correct: - D marks a position right of the pivot, where the CM must be for the left weight to provide balancing torque, per the principle of moments (net torque = 0). Why the others are wrong: - A is left of the pivot; this would require added weight on the right to balance, not left. - B is at the pivot; a uniform or centered CM wouldn't need extra weight for balance. - C is …