Identify the correct statement about the resistance of a wire and specific resistance.

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**Solution:**

1. The resistance $R$ of a wire is given by the formula:

$$R = \rho \frac{L}{A}$$

where:
   - $L$ is the length of the wire,
   - $A$ is the cross-sectional area,
   - $\rho$ is the specific resistance (resistivity) of the material.

2. From the formula, resistance is directly proportional to length $L$ and inversely proportional to cross-sectional area $A$.

3. Statement 1 is incorrect because resistance does not depend on the density of the wire.

4. Statement 2 is incorrect because specific resistance varies for different materials.

5. Statement 4 is incorrect because specific resistance is an intrinsic property of the material and does not depend on the wire's dimensions.

**Answer:** Resistance of a wire depends on the length and cross-section of the wire.

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