Why does the Torah shift from singular to plural when speaking about choice?

This source-based Hagut Yosef essay explores the question: Why does the Torah shift from singular to plural when speaking about choice? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the source’s meaning and identity and does not add new halakhic, historical, psychological, medical, legal, political, scientific, or empirical claims beyond the Hebrew source.