What is the relationship of a turbine and a generator?

a.
a turbine provides energy from high winds to the generator. the generator transforms this energy from the high winds into electrical energy.

b.
a turbine provides chemical energy to the generator. the generator transforms this chemical energy into electrical energy.

c.
a turbine provides hydropower to the generator. the generator transforms this hydropower into electrical energy.

d.
a turbine provides mechanical energy to the generator. the generator transforms this mechanical energy into electrical energy.