A more thorough explanation:

Definition: Viable means capable of living or existing independently.

Examples:

• A viable fetus can survive outside the womb.
• A business plan must be viable to attract investors.
• A plant needs viable seeds to grow into a new plant.

The examples illustrate that something that is viable is able to survive or exist on its own. A viable fetus can live outside the womb, a viable business plan can attract investors and become successful, and viable seeds can grow into new plants.