When individuals purchase life insurance to enable their heirs to pay estate taxes, this is called

Estate conservation focuses on strategies to protect and preserve the value of an estate over time, typically through financial planning and investments. While life insurance can play a role in conserving an estate's value, it does not specifically address the immediate cash needs for paying estate taxes, which is the primary function of liquidity.

Estate creation involves the accumulation and growth of assets to build an estate. This concept pertains to the process of generating wealth and assets rather than providing immediate cash flow for expenses like estate taxes. Life insurance is not a tool for creating an estate but rather a means to manage the estate's financial obligations upon death.

Survivor protection refers to the financial security provided to dependents after the death of a primary income earner. While life insurance does offer protection to survivors, the specific context of using insurance to cover estate taxes aligns more closely with the concept of liquidity, as it directly addresses the need for immediate cash availability.