Which option correctly lists the drive train components?

• A. Brakes, 2) Wheels, 3) Tires
• B. Shifters, 2) Cassette, 3) Front/Rear Derailleurs, 4) the crank set, and 5) the Chain
• C. Shifters, 2) Chain, 3) Derailleurs, 4) Brakes
• D. Pedals, 2) Chain, 3) Rims, 4) Frame

Answer: (B)

The drive train consists of the parts that transmit pedal power to the wheels: the crank set (where the pedals attach), the chain, the front and rear derailleurs that shift gears, the rear cassette (gears on the rear wheel), and the shifters that control those derailleurs. The option that lists shifters, cassette, front/rear derailleurs, crank set, and chain matches exactly these components and excludes items that aren’t part of the drivetrain, like brakes, rims, tires, or the frame. The other options mix in non-drivetrain parts or omit essential drivetrain pieces, so they aren’t correct.