Which of the following statements is correct?

Options

A. Ozone hole is a hole formed in stratosphere from which ozone out
B. Ozone hole is a hole formed in the troposphere from which ozone oozes out.
C. Ozone hole is thinning of ozone layer of stratosphere at some places.
D. Ozone hole means vanishing of ozone layer around the earth completely

Explanation

To determine which statement about the ozone hole is correct, we will analyze each option provided:

1. **Statement 1**: "Ozone hole is a hole formed in the stratosphere from which ozone out."
- This statement is incorrect. The ozone hole refers to a region of the stratosphere where the concentration of ozone is significantly reduced, not a hole from which ozone escapes.

2. **Statement 2**: "Ozone hole is a hole formed in the troposphere."
- This statement is also incorrect. The ozone hole is specifically related to the stratosphere, not the troposphere.

3. **Statement 3**: "Ozone hole is thinning of ozone layer of stratosphere at some places."
- This statement is correct. The ozone hole refers to the thinning of the ozone layer in the stratosphere, particularly over Antarctica, during certain times of the year.

4. **Statement 4**: "Ozone hole means vanishing of ozone layer around the earth completely."
- This statement is incorrect. The ozone hole does not mean that the ozone layer has vanished completely; it refers to a significant reduction in ozone concentration in specific areas.

Based on the analysis, the correct statement is:

**Correct Answer**: "Ozone hole is thinning of ozone layer of stratosphere at some places."