Nitrogen, phosphorus, and potassium are examples of:
Macronutrients
The correct option is B.
Explanation for the correct option:
Option B:
Explanation for the incorrect options:
Option A:
The term micronutrients are used to describe vitamins and minerals in general.
Option C:
Fertilizers are chemical substances supplied to the crops to increase their productivity.
Option D:
Nitrogen, phosphorus, and potassium cannot come under micronutrients.
Final answer: Nitrogen, phosphorus, and potassium are examples of macronutrients.