Which of the following is a macronutrient? Select one:

a. nitrogen

b. manganese

c. zinc

d. boron

a. nitrogen is the correct answer.

Explanation:

Nitrogen is a macronutrient because nitrogen present in the plant in large quantities. Macronutrients are the nutrients which are needed in large amount for the proper growth and development, as they are required in large amounts they are called macronutrients. Macronutrients are the most essential elements for plants and required so that body functions properly. Macronutrients comprise carbon, nitrogen, sulfur, oxygen, potassium, hydrogen, calcium, phosphorus and magnesium.