All of the following are types of artificial river infrastructure, except: select one: a. levees b. dams c. flood walls d. riparian zones e. diversion canals

d. riparian zones

Explanation:

A riparian zone is an area that is found between the upland zone and the shrew lines and forms corridor between the water and the lands, these zones provide a distinct moist rich environment of the formation of the animals and the plant life and these are characterized by the diverse plant communities. This zone also tends to maintain the water levels and the temperature levels and at times protects from erosion. It also functions as the filtering of the runoff and the management of the stormwater and the control of the floods.  And tends to provide a habitat for the formation of the plant and the animals, and thus form an integrity of the shoreline zone.

Nigeria and south africa

Maybe a horizontal because its a pattern