In which of the following fixed annuity features is the surrender value tied to interest rates?

The interest sensitive trigger is not a common term used in the context of fixed annuities. It does not specifically define a feature that adjusts surrender values based on interest rates. Instead, this phrase may refer to a mechanism that triggers benefits or changes under certain interest rate conditions, but it does not directly link to surrender value adjustments.

Variable sub-accounts are associated with variable annuities, not fixed annuities. In a variable annuity, the account value fluctuates based on the performance of underlying investment options. Since these accounts do not provide a guaranteed return tied to fixed interest rates, they do not affect the surrender value in the same manner as MVAs do.

Fixed value rates refer to the guaranteed interest rates offered on fixed annuities, which do not change over time. While they provide stability for annuity holders, they do not adjust the surrender value based on current market interest rates. Therefore, they do not create any variability in the surrender value influenced by interest rate changes.