Explanation:

- Option 1: Appealable

- Not every order is appealable. Only those specified under legal provisions.

- Option 2: A decree

- A decree is a formal expression of adjudication which conclusively determines the rights of parties. An order allowing or disallowing an amendment does not do this.

- Option 3: An appealable order

- Some orders are explicitly appealable under certain laws, but generally, procedural orders, like amendments, aren't unless they meet specific criteria.

- Option 4: None of the above

- An order on amendment application is generally not an appealable decree or order.

Correct Answer: Option 4 – None of the above