Which of these is an advantage of synthetic fibres?

Options

A. Melt easily
B. Fire resistant
C. High tensile strength
D. They have good moisture-absorption capacity

Explanation

**Step-by-Step Solution:**

1. **Understanding Synthetic Fibres**: Synthetic fibres are man-made fibres created through chemical processes. They have various properties that can be advantageous compared to natural fibres.

2. **Evaluating Options**: The question asks for the advantages of synthetic fibres. We need to analyze the given options to determine which one represents an advantage.

3. **Option 1 - Melting Easily**: The first option states that synthetic fibres melt easily. This is generally considered a disadvantage because materials that melt easily can lose their shape and integrity under heat.

4. **Option 2 - Fire Resistance**: The second option mentions fire resistance. Most synthetic fibres are not fire-resistant; in fact, they can catch fire easily and may even melt when exposed to high temperatures. Therefore, this is also not an advantage.

5. **Option 3 - High Tensile Strength**: The third option refers to high tensile strength. Tensile strength is the ability of a material to withstand tension without breaking. Synthetic fibres, such as nylon, are known for their high tensile strength, making them suitable for applications like parachutes and ropes.

6. **Conclusion**: After evaluating the options, the advantage of synthetic fibres is that they have high tensile strength. Therefore, the correct answer is option 3.

**Final Answer**: The advantage of synthetic fibres is high tensile strength.

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