Answer:
C) Animals have been hurt by wind turbines, so the sites of wind farms have been carefully selected is the correct answer.
Step-by-step explanation:
The question asks about the problem-solution structure in the paragraph. In this case, it is necessary to identify each of them:
The problem is stated in the first phrase, Wind turbines have become a hazard to birds and bats.
The solution is presented at the end, Careful site selection is key in reducing the accident.
Due to this, option C is the correct answer.