Correct Answer: nitrogen, phosphorus and potassium

Solution : The answer is nitrogen, phosphorus and potassium.

Primary nutrients are present in the greatest quantities within plant tissues and are critical in various physiological processes. Plants' major nutrients are: Nitrogen (N) is an essential component of amino acids, proteins, chlorophyll, and nucleic acids. It is essential for plant growth, photosynthesis, and development in general. Phosphorus (P) is required for energy transfer and storage (as ATP), the synthesis of DNA and RNA, and the creation of roots, flowers, and fruits. Potassium (K) is involved in osmoregulation, enzyme activation, and water and nutrient flow inside plant cells.