Answer:
D. Remote sensing
Step-by-step explanation:
The condition in which the farmers do not physically touch the crops but they review the growth and observe the crops is said to be remote sensing the crops. This process involves the process of analysis and observation remotely. Diseases, damages, growth, color, and water surplus or deficiency can be remotely accessed by the remote images. These details helps in better treatment of the damaged area and focus more on that particular area.