To determine why cotton is used to make clothes, we will evaluate the given options step by step.
### Step 1: Analyze the first option
**Option 1:** "It is strong, heavy and absorbs water."
- Cotton is indeed strong and absorbs water, but it is not heavy; it is lightweight. Therefore, this option is not entirely accurate.
**Hint:** Consider the properties of cotton that are commonly known—think about its weight and how it feels when worn.
### Step 2: Analyze the second option
**Option 2:** "It has low tensile strength, absorbs dyes and is transparent."
- Cotton does absorb dyes well, but it does not have low tensile strength; it actually has a good tensile strength. Additionally, cotton fabric is not transparent. Thus, this option is incorrect.
**Hint:** Recall what tensile strength means and how it applies to cotton. Does it break easily?
### Step 3: Analyze the third option
**Option 3:** "It is light, soft, absorbs dyes and sweat."
- This option accurately describes cotton. Cotton is lightweight, soft to the touch, and it absorbs both dyes and sweat effectively. Therefore, this option is correct.
**Hint:** Think about the comfort of wearing cotton clothing, especially in hot weather. How does it feel against your skin?
### Step 4: Analyze the fourth option
**Option 4:** "It is a good conductor of heat."
- Cotton is not a good conductor of heat; it is an insulator. This means it does not transfer heat well, which is why it is comfortable to wear in various temperatures. Hence, this option is incorrect.
**Hint:** Consider how cotton behaves in terms of temperature regulation. Does it keep you warm or cool?
### Conclusion
After analyzing all the options, the correct answer is **Option 3: "It is light, soft, absorbs dyes and sweat."** This option accurately reflects the properties of cotton that make it suitable for clothing.