Which statement best summarizes Delaware’s Piedmont region?

• The Piedmont’s streams and elevation changes made wind-powered agriculture more available than in much of southern Delaware
• The Piedmont’s streams and elevation changes made coal extraction more available than in much of southern Delaware
• The Piedmont’s streams and elevation changes made desert irrigation more available than in much of southern Delaware
• The Piedmont’s streams and elevation changes made waterpower more available than in much of southern Delaware