With respect to energy, which is not necessarily a goal of chemistry?

Since there are no choices given, I will give examples regarding energy. Solar power is a renewable energy resource. Its source is from the sun and the batteries that needs this power does not run out of energy. Wind power is a renewable energy resource. The wind is always present in the earth’s atmosphere. Tidal power is a renewable energy resource. The energy that the waves produce can generate electricity. It is a renewable resource. Nuclear energy uses nuclear reaction to create and produce electricity. Nuclear fission is the main nuclear reaction and it uses uranium. It is a renewable energy resource.