What part of a wind turbine provides motion to convert into electricity?
a. generator
b. blades
c. tower
d. rotor

There are two types of modern wind turbines. In a Verical-axis wind turbines (VAWTs), the shaft is mounted on a vertical axis perpendicular to the ground. They are aligned with the wind so there’s no adjustment necessary when the wind direction changes. It can’t start moving on itself that is why it needs a boost from its electrical system to get started. It uses wires for support so the rotor elevation is lower. They are less efficient than HAWTs due to its lower elevation. Lower elevation means slower wind due to ground interferences. The other type is Horizontal-axis wind turbines (HAWTs), the shaft s mounted horizontally parallel to the ground. It is constantly aligned with the wind using a yaw-adjustment mechanism. This mechanism moves the entire rotor left or right in small increments. It uses a tower to lift the turbine components to an optimum elevation for wind speed and take up very little ground space. It is much more efficient than VAWT. The motion that converts into electricity is the rotor. The answer is letter D.