The correct answer is option 2, which states that only statement 1 is correct.

Let`s dissect each statement to understand why this is the correct answer:

1. Statement 1: This statement is correct. Short notice questions relate to matters of urgent public importance and can be asked for an oral answer. These questions are typically related to current events or pressing issues that require immediate attention and response from the concerned Minister.

2. Statement 2: This statement is incorrect. Short notice questions can be admissible even if the Minister concerned does not agree to answer them. However, it is more likely that the Minister will agree to answer a short notice question due to its urgent nature.

3. Statement 3: This statement is incorrect. Short notice questions are not asked specifically during question hour. They can be asked at any time during the proceedings of the Legislature, as long as they fulfill the criteria of being related to urgent public importance.

Therefore, the correct answer is option 2, as only statement 1 is correct.