Answer:
C. Water
Step-by-step explanation:
Tennessee Valley Authority (TVA) Sites
Red = water dams
Purple = nuclear power plants
Orange = fossil fuel power plants
Based on the information provided within the question as well as above it can be said that the TVA believes this about Water. This can be seen in the picture since Water for Tennessee is a vast resource for them in comparison to the other renewable resources and thus can benefit greatly from it.