<span>d. 4.5 billion years
is the correct choice</span>
The answer is b because I had the on USA test prep and got it wrong and it showed me the right answer which is dividend income
1. The loan.
2. The use of farming tools and technology.
3. Training and a focus on farming education.
4. The ability to water.
5. Farming together.
6. Research and new ideas.
7. The commercialization of farming.
8. The diversification of crops.
