Which of the following reactions of the moped can you expect, if while starting abruptly, you release the clutch lever without increasing the engine revolutions?

This question is about how a moped reacts when, while moving off, you suddenly release the clutch lever without increasing the engine revs. You can expect the engine to stall - answer A.

At idle speed, the engine has little power. When you suddenly release the clutch, the whole resistance of the stationary vehicle falls on the engine at once, the revs drop sharply and the engine stalls, often with a jerk. A rear wheel skid (answer B) and an abrupt move off (answer C) are more likely to happen when you release the clutch at high revs - then the force is too great, the wheel spins and the moped may shoot forward. The correct way to move off is to open the throttle slightly and release the clutch lever smoothly until you feel the moped start to move. A stalled engine at a junction or on a level crossing can be dangerous, so it is worth practising moving off on a training area.

Legal basis: Art. 19 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)