* Απόφαση (Apofasi): This is probably the closest single word and is commonly used in modern Greek to mean "decision," especially a formal or official one.
* Απόκριση (Apókrișī): This means "response" or "answer," and could be used for a decision if it's in response to a question or situation.
* Κρίση (Krisi): This means "judgment" or "critical assessment," and can imply the process of reaching a decision.
* Προαίρεση (Proairesi): This refers to a "choice" or "option," and implies the element of volition in making a decision.
Therefore, Απόφαση (Apofasi) is the most accurate and commonly used translation, but the best choice will depend on the context.