Identify the sentence that uses a colon correctly.
Wind farms have one goal: to produce electricity.
Wind turbines hamess the power of the wind: rotating blades turn a rotor that spins a generator, creating electricity.
Groups of wind turbines are called wind farms: one of the largest wind farms is in California and has over 4,800 wind
turbines.
Several components make up most wind turbines including: three blades, a rotor, air shafts, a gear box, a generator, a brake
and a tower.