Use it to convey that all other possibilities have been tried or considered.

Last Option

It hints at a sense of urgency or something you wouldn't normally choose.

Emergency Solution

It is not normally a first choice, reflecting a less desired pathway or option.

Suggests other methods have been unsuccessful, and this is the final attempt.

Frequently used in legal or formal situations to describe a final, decisive action.

Indicates a decision made by the highest authority or final arbiter in a situation.

Reflects that the choice made is significant and has considerable impact.