Answer: D.soil scientist
Step-by-step explanation:
Agronomy is the agricultural study and practice of using plants to contribute to human society by through a number of avenues such as by making food, producing fuel and even restoring dilapidated lands.
Agronomy started by simply being about producing food with plants but it has since grown to encompass so much more including but not limited to the fields of plant genetics and physiology, land management and soil science.