What type of will can be altered by the maker at any time during their lifetime?

The correct answer is a revocable instrument. A revocable will is a type of will that can be changed or revoked by the maker at any point during their lifetime. This flexibility allows individuals to update their estate plans as circumstances change, such as marriage, divorce, the birth of children, or changes in financial status.

While the term "amendatory instrument" might suggest a changeable document, it is not a standard term used in estate planning to refer specifically to wills. Generally, documents that are categorized this way might refer more broadly to amendments or modifications rather than indicating the inherent revocability of a whole will. The primary distinction lies in the nature of the document as a will rather than an amendment.

In contrast, the terms "certified instrument" and "permanent instrument" do not adequately capture the essence of a will's revocability. A certified instrument usually refers to a document that has been validated or officially confirmed, while a permanent instrument suggests a document that is designed to remain unchanged or in effect indefinitely, which is contrary to the nature of a will that can be adjusted or revoked.

Therefore, recognizing that a revocable will can be altered by its maker at any time is essential for understanding the nature of will-making