Word/Phrase: the main reason
Translation: la razón principal
Pronunciation: la raˈθon pɾinθiˈpal
The main reason for the delay - La razón principal del retraso
This is the main reason I chose this option - Esta es la razón principal por la que elegí esta opción
Understanding the main reason is crucial - Entender la razón principal es crucial
The main reason behind his decision was unclear - La razón principal detrás de su decisión no estaba clara
She explained the main reason thoroughly - Ella explicó la razón principal a fondo