Select the word or phrase that is redundant and can be removed without changing the meaning of the text. Combat canines in the U.S. military played an essential and important role in finding improvised explosive devices, or IEDs, during the war in Afghanistan.

Select the word or phrase that is redundant and can be removed without changing the meaning of the text.

Combat canines in the U.S. military played an essential and important role in finding improvised explosive devices, or IEDs, during the war in Afghanistan.

A) combat canines
B) essential
C) important
D) improvised explosive devices