Elucidation or clarification: making causes, mechanisms, or facts clear, often through investigation or explanation.
事故の原因を解明するために専門家が呼ばれた。
Experts were called in to clarify the cause of the accident.
調査により多くの疑問が解明された。
Many questions were clarified by the investigation.
データ解析で原因が解明されつつある。
The cause is gradually being clarified through data analysis.