Answer:
Wind & natural gas are better alternatives than coal and oil. Though, if I were to pick one, it would be wind.
Step-by-step explanation:
I'd choose wind because wind is a renewable source of energy, making it one of the best energy sources on the planet. Natural gas is good as well, it's definitely better than coal and oil; since coal and oil is very harmful to environment when burned. Though, it has two flaws; it can give off some emissions; though it may not be on the level as coal & oil. Also, it's not a renewable source of energy.
Therefore, wind is better option.