The statements should she put on her poster to encourage the use of hydroelectric power is hydroelectric does not emit greenhouse gasses.
Hydroelectricity is the electricity produced by water sources. This energy is generated in dams or near waterfalls.
Hydropower is used here to generate electricity, the force by motion of water is used. In hydropower plants, the water flows through a pipe, which goes to move the blades of the generator.
Thus, the correct option is B, Hydroelectric does not emit greenhouse gasses.
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