They are safer for the environment. They are cheaper to develop. They are easier to transport. They produce more energy.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Many countries depend on the energy from fossil fuels. Some scientists suggest using renewable sources of energy instead. Why would scientists most likely suggest using renewable sources of energy?
Possibilities:
- They are safer for the environment.
- They are cheaper to develop.
- They are easier to transport.
- They produce more energy.

They are safer for the environment.