The answer on which of the following is an example of a biased source?

C. an editorial that only gives the writer's opinion

Explanation: Biased because it only gives one view point on subject

i dont know cuh

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.