Concept:Agricultural research is the systematic study of farming systems to improve food production and protect the environment.
Explanation:The primary objective of agricultural research is to enhance agricultural productivity and sustainability.
Researchers use scientific methods to develop innovative techniques, tools, and farming practices.
These innovations help to raise crop yields and improve the efficiency of farm operations.
At the same time, research seeks to reduce the negative impact of farming on the environment.
It also aims to conserve natural resources such as soil and water for future generations.
Developing new technologies, increasing crop diversity, and promoting organic farming are all important research activities.
However, these activities are only tools or sub-goals that serve the broader target.
The ultimate goal is to create agricultural systems that are both productive and sustainable over a long period.
This ensures food security, farm profitability, and ecological balance.
Answer:D. Enhancing agricultural productivity and sustainability