Final answer:
Australia generates most of its electricity from coal, with solar power and other renewable energy sources increasing but still behind in contribution.
Step-by-step explanation:
Among the given options, Australia generates most of its electricity from coal. While Australia has been making advances in renewable energy, particularly in solar and wind energy, the bulk of its energy mix is still dominated by coal. This is in contrast to countries like New Zealand, where a significant percentage of electricity is generated from hydroelectric power. In addition, Australia does not have any nuclear power plants, so nuclear energy is not part of Australia's energy mix. Furthermore, solar power is growing, but it does not represent the largest source of electricity generation for the nation..