Which of the following statements is true?
wind is the most commonly used renewable energy source in the united states.
hydropower uses the kinetic energy of water to generate electricity.
wind energy does not use a turbine or a generator to produce electricity.
solar energy can only be used on earth. it can't be used in space.

The most significant renewable source of energy in the US is hydropower - so the first statement is false.

Hydropower is the power that uses the kinetic energy  (energy due to motion, here to the flow of the river) of the water to generate electricity - the second statement is correct!

Also wind energy definitely makes use of  turbines to produce energy - so this statement is also false!