Which US region is most often considered a historical center for finance, medicine, education, and commerce? A.
the West Coast
B.
the Midwest
C.
the Northeast
D.
the South

Please select the best answer from the choices provided.

A
B
C
D

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.