Where Does Anyone in Scripture Teach That Adam and Eve Sinned in Eating the Fruit?

Questions about where someone in Scripture teaches that Adam and Eve sinned in eating the fruit, why it’s so important for Catholics to categorize sin types, and whether Protestants could benefit from that practice.

• Can you show where anyone in Scripture teaches that Adam and Eve sinned in eating the fruit?
• Why is it so important for Catholics to categorize sin types, and could Protestants benefit from this practice?