Weeds are the (a) Main Crop Plants (b) Insects and Pests (c) Unwanted Plants Growing along with the Crop

Answer: (c)

Explanation: Weeds are undesired plants that grow in the field alongside crop plants. Weeds are damaging to growing crops because they compete for nutrients. Weeds are unwanted plants that grow alongside crops. These weeds eat the nutrients that are given to the crops, reducing the amount of nutrients available to the crops and consequently impeding their growth. To promote plant growth, the growth of these weeds must be restricted.