Which of these scenarios is most similar to the aztec empire's system of agriculture?
a. a farmer watches the sun's patterns to determine the best time to plant his crops b. a farmer plants many different crops in his field to make sure at least some of them thrive in the soil. c. a farmer plants the same crops in his field every year because the soil has always supported them in the past.
d. a farmer observes the behavior of his animals to determine when to begin harvesting crops