Choose the incorrect statement for the electric field lines.

Options

A. Field lines starts from positive charges and end at negative charges.
B. Field lines can be considered to be continuous curves without any breaks in a charge free region.
C. Two field lines can never intersect each other.
D. Electric field lines can form closed loops.

Explanation

To solve the question "Choose the incorrect statement for the electric field lines," we will analyze each statement provided in the options and determine which one is incorrect.

### Step-by-Step Solution

1. **Analyze the First Statement**:
- **Statement**: "Field lines start from positive charges and end at negative charges."
- **Explanation**: This statement is true. Electric field lines are drawn to represent the direction of the electric field, which originates from positive charges and terminates at negative charges.

2. **Analyze the Second Statement**:
- **Statement**: "Field lines can be considered to be continuous curves without any break in a charge-free region."
- **Explanation**: This statement is also true. Electric field lines should be continuous to indicate the direction of the electric field. If there were breaks, it would be impossible to define the direction of the electric field at those points.

3. **Analyze the Third Statement**:
- **Statement**: "Two field lines can never intersect each other."
- **Explanation**: This statement is true. If two electric field lines were to intersect, it would imply that there are two different directions of the electric field at that point, which is not possible. Therefore, electric field lines cannot intersect.

4. **Analyze the Fourth Statement**:
- **Statement**: "Electric field lines can form a closed loop."
- **Explanation**: This statement is incorrect. Electric field lines do not form closed loops; they start from positive charges and end at negative charges. They cannot loop back on themselves.

### Conclusion
The incorrect statement among the options given is:
- **Option 4**: "Electric field lines can form a closed loop."

### Final Answer
The incorrect statement is option 4.

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