Answer: c. It would utilize renewable energy sources and create less pollution.
Step-by-step explanation:
The alternative sources of energy are things like eolic energy (uses the wind as an energy source) or solar energy (uses sunlight as an energy source). As those resources are natural and renewable, we never will run out of those resources.
Also, the production of those types of energy usually causes less pollution, from this, we have that the correct answer is C.
This will not create new habitats for organisms, it is not really much expensive than the actual methods (while is true that the initial cost of the infrastructure may be very high) so we can discard option B and D.
And less pollution has almost anything to see with the extraction of fossil fuels (the extraction itself causes pollution) so option A can also be discarded.