Choose the best alternative as the answer-
Milk always contains

Options

A. Sugar
B. Fats
C. Calcium
D. Water

Answer

To solve the question "Milk always contains", we need to analyze the options provided and determine which one is a mandatory component of milk.

### Step-by-Step Solution:

1. **Understanding the Components of Milk**:
- Milk is a complex liquid that contains various nutrients. We need to identify which of the given options is always present in milk.

2. **Analyzing the Options**:
- **Option 1: Sugar** - Milk contains lactose, which is a type of sugar, but not all milk types have the same sugar content.
- **Option 2: Fat** - Milk can be low-fat or skim, meaning fat content can vary.
- **Option 3: Calcium** - Milk is known for being a good source of calcium, which is essential for bone health.
- **Option 4: Water** - While milk is primarily composed of water, the question asks for a component that is always present in significant amounts.

3. **Identifying the Mandatory Component**:
- Among the options, calcium is a crucial nutrient that is consistently found in milk. It is a defining characteristic of milk, especially in terms of its nutritional value.

4. **Conclusion**:
- Therefore, the best alternative that represents something that milk always contains is **Option 3: Calcium**.

### Final Answer:
**Calcium** (Option 3) is the best alternative as it is a mandatory component of milk.

---