Whole Life
Level premiums, guaranteed elements, and a cash value that accumulates on a schedule set at issue.
The structure is the most predictable of the three. Premiums are typically fixed for life, the death benefit is guaranteed, and the cash value growth is defined in the contract rather than tied to market movement. What you give up is flexibility: changing the premium or the death benefit later is usually limited, and the cost per dollar of death benefit is the highest of the three.
Consider it when predictability matters most, when you want the guarantees stated plainly in the contract, or when the need is genuinely lifelong.
