The correct option is
D All of the above
The explanation for correct answers:
Option D All of the above
- Ideal fuels should be easy to store and transport.
- They should not leave behind any undesirable substances which can be harmful to us.
- They must combust easily in an efficient manner.
- They are inexpensive, readily available, and do not emit any harmful smell.
- They release a large amount of energy during combustion.
- That is, a good fuel is readily available, cheap, and burns easily in the air.
Hence option D All of the above is correct.