Agriculture
Agriculture involves the cultivation of crops and the rearing of animals for food, fiber, medicinal plants, and other products used by humans. It includes various practices such as land preparation, planting, irrigation, fertilization, pest control, and harvesting. Through agriculture, humans have created specific conditions and techniques to optimize crop growth and yield, making it the most suitable environment for domesticated plants to thrive.
Agronomy, on the other hand, is a branch of agriculture that focuses on the science and practice of crop production and soil management.
Agroecology is a field that studies the ecological aspects of agriculture, including the interactions between crops, animals, humans, and the environment.
The term "humanization" is not commonly used in this context and does not accurately describe the modified environment for domesticated plants. Therefore, the correct answer is a. agriculture.