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Mechanical advantage of a lever increases with distance from the fulcrum. The wrench acts as a lever, with the bolt as the fulcrum. Worker B, applying force farther from the bolt, gains more torque and thus greater advantage. Option B is correct. MASS emphasizes recognizing how tool use affects force and efficiency. This principle is crucial in daily maintenance tasks, ensuring less effort and reduced injury risk.

Only option B ensures that the shaded face folds opposite to another face. The MASS spatial section tests ability to visualize cube folding, critical for interpreting diagrams and assemblies. In maintenance, workers often imagine part orientations before installation. Practicing folding nets improves visualization skills under time pressure.

In cube folding, opposite faces always align top–bottom or front–back. The shaded square folds opposite to the top face. Option A is correct. MASS spatial items test orientation recognition in folded solids.

Effort arm = 2 – 0.5 = 1.5 m. Mechanical advantage = 1.5 ÷ 0.5 = 3. Load = effort × advantage = 50 × 3 = 150 N. Wait—that matches option B, not C. Correct is B. MASS mechanical items assess lever ratios. Properly calculating arms ensures accurate force estimation, crucial in handling heavy components. Misplacing fulcrum distances can lead to incorrect torque and unsafe lifting in real maintenance.

MA = Load ÷ Effort = 200 ÷ 50 = 4. Option C is correct. MASS mechanical items test ratio recognition in levers, vital for handling heavy parts with minimal effort.