Personally I would say it's A (apart from the installation costs which may make it a little expensive) but it does involve certain aspects of D also as wind energy doesn't cause pollution. So either A or D!
Hope I was of help! :)
C) This is the right answer.
Su geografía física es en gran parte montañosa. Posee suaves playas en su litoral del Pacífico y planicies bajas al norte del país. Es atravesada en su parte central por la cordillera de los Cuchumatanes y parte de la sierra Madre del Sur.
