In which of the following, all three are macronutrients? (A) Iron, copper, molybdenum (B) Molybdenum, magnesium, manganese (C) Nitrogen, nickel, phosphorus (D) Boron, zinc, manganese

Options

A. Iron, copper, molybdenum
B. Molybdenum, magnesium, manganese
C. Nitrogen, nickel, phosphorus
D. Boron, zinc, manganese

Answer

To determine which option contains all three macronutrients, we first need to identify which nutrients are classified as macronutrients and which are classified as micronutrients.

### Step-by-Step Solution:

1. **Understand Macronutrients and Micronutrients**:
- Macronutrients are essential nutrients required by plants in larger quantities. Common macronutrients include:
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
- Calcium (Ca)
- Magnesium (Mg)
- Sulfur (S)
- Micronutrients are required in smaller amounts and include elements like iron (Fe), copper (Cu), molybdenum (Mo), zinc (Zn), boron (B), and manganese (Mn).

2. **Analyze Each Option**:
- **Option (A): Iron, Copper, Molybdenum**
- All these are micronutrients.
- **Option (B): Molybdenum, Magnesium, Manganese**
- Molybdenum and manganese are micronutrients, while magnesium is a macronutrient.
- **Option (C): Nitrogen, Nickel, Phosphorus**
- Nitrogen and phosphorus are macronutrients, but nickel is a micronutrient.
- **Option (D): Boron, Zinc, Manganese**
- All three are micronutrients.

3. **Conclusion**:
- None of the options contain three macronutrients. Therefore, the answer is that none of the options provided contain all three macronutrients.

### Final Answer:
None of the above options contain all three macronutrients.