Detailed Instructions: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Problem:Fact1: a windmill converts wind energy into electricity primarily by using mechanical energy, Fact2: Mechanical energy is the energy of moving objects., Question: How does a windmill make wind energy? (A) simple (B) adding heat (C) programmed (D) Movement (E) Water (F) Standing still (G) forces (H) Electricity
Solution:
D