Which of the following is a macronutrient?

Options

A. Mo
B. Ca
C. Zn
D. Mn

Answer

To determine which of the following options is a macronutrient, we can follow these steps:

### Step 1: Understand Macronutrients and Micronutrients
- Macronutrients are nutrients that are required by organisms in large amounts. They provide energy and are essential for growth and development.
- Micronutrients, on the other hand, are required in smaller amounts and do not provide energy.

### Step 2: Identify the Options
The options provided are:
1. Molybdenum
2. Calcium
3. Zinc
4. Manganese

### Step 3: Classify Each Option
- **Molybdenum**: This is a micronutrient, required in very small amounts.
- **Calcium**: This is a macronutrient, required in larger amounts for various physiological functions.
- **Zinc**: This is a micronutrient, also required in small amounts.
- **Manganese**: This is a micronutrient, required in small amounts as well.

### Step 4: Conclusion
Among the options provided, **Calcium** is the only macronutrient.

### Final Answer
The macronutrient from the given options is **Calcium**.

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