The tribes were primarily farming tribes who lived along rivers.

A.
Athapascan and Siouan
B.
Siouan and Caddoan
C.
Athapascan, Caddoan, and Siouan
D.
Athapascan and Caddoan

D.  Athapascan and Caddoan.

Explanation:

The Athapascan and Caddoan tribes lived along rivers while Siouan tribe mainly lived in the Great Plains. The native American tribes of Athapascan and Caddoan were farming tribes and lived near fertile lands and rivers for farming and fishing. The Athapascan settlements were usually situated along Illinois rivers and Rogue valleys and the Caddoans settled along the lower Red River.