Concept:Removing unwanted plants from farmland is known as weeding.
Explanation:Weeds are unwanted plants that grow among crops.
They compete with crops for nutrients, water, sunlight, and space.
Weeding removes these weeds manually with cutlasses or hoes.
It can also be done chemically by applying herbicides.
Weeding helps prevent weeds from harbouring pests and diseases.
Thus, the practice of removing unwanted plants on the farm is weeding.
Answer:A. Weeding