The correct answer is B) Agriculture was the major economic activity.
The statement that was more true about life in the middle colonies than the northern colonies is "Agriculture was the major economic activity."
The middle colonies in the Americas were Pennsylvania, New York, New Jersey, and Delaware. The weather conditions and the fertile soil were good to develop agriculture. These colonies grew good crops such as wheat, oats and other grains that were exported to Europe. That is why they called these colonies the "breadbasket of America."