Renewable energy has the potential to have all the same applications as non-renewable. But we currently don't have the resources and potential.
So I would say the answer would be B, but this question is somewhat confusing.
Having a variety is always good you never want to have too much of one thing. It helps with the food chain its basically survival of the fittest
The answer is in the attachment below:
Answer:
The cold milk transfers its cold to the coffee, cooling the coffee down.
Hope This Helps!