Newton's theory of gravity Mendel's experiments with pea plants Franklin's experiments with electricity Darwin's research on the Galapagos islands
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which had the greatest impact on the way humans heat their homes?
Possibilities:
- Newton's theory of gravity
- Mendel's experiments with pea plants
- Franklin's experiments with electricity
- Darwin's research on the Galapagos islands

Franklin's experiments with electricity