Which of the following is used for making magnets ?

Options

A. duralumin
B. magnalium
C. bronze
D. alnico

Explanation

To answer the question "Which of the following is used for making magnets?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: First, we need to look at the options provided in the question. Although the options are not listed here, we will focus on the common materials used for making magnets.

2. **Understand Magnet Materials**: Magnets are typically made from ferromagnetic materials. Common materials include iron, cobalt, nickel, and their alloys.

3. **Focus on Alloys**: Among the materials used for making magnets, alloys are often preferred due to their enhanced magnetic properties.

4. **Introduce Alnico**: One of the most well-known alloys used for making magnets is Alnico. Alnico is an alloy primarily composed of iron, with smaller amounts of aluminum, nickel, and cobalt.

5. **Conclusion**: Based on the information, Alnico is the correct answer for the material used for making magnets.

### Final Answer:
The material used for making magnets is **Alnico**.

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