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The camshaft is driven by a __________ on the crankshaft.

  1. belt

  2. chain

  3. gear

  4. pulley

The correct answer is: gear

The camshaft is driven by a gear on the crankshaft. A belt or a chain could potentially slip or break, causing the timing of the engine to be off and potentially causing further damage. A pulley would not be efficient in providing enough torque to turn the camshaft. A gear is specifically designed to interlock with other gears and provide a more stable and sturdy connection.