At first sight, it could be easy to choose the best answer, however, it is quite controversial.

Renewable energy nowadays it is a fashionable topic. A big number of new companies are being born recently and they are selling "the solution" to the planet salvation. Actually, the amount of energy they can produce  it is smaller than the unrenewable energy and it is even more expensive.

On the contrary, reduce what we shop and re-use it can be more effective. Firstly, we use staff that it can not degrade easily. Secondly, we do not produce more or reduce the production and we give it a new life, such as the plastic, glass and others food containers we can make a beautiful flowerpot to decorate.

In conclusion, the human have made a very big disaster with the planet but also more people that we think are doing the best to fix it creating a lot of creative ways such as this two mentioned before. Even though, some are less effective than others if we all cooperate we will accomplish the mission of changing the planet and save it.