The correct answers are B) the poster’s red, white, and blue colors and D) the use of Uncle Sam to represent the United States.
The parts of this poster are patriotic symbols are the following: the poster’s red, white, and blue colors and the use of Uncle Sam to represent the United States.
We are talking about the famous Uncle Sam poster designed to recruit soldiers to join the army during World War I. American illustrator, James Montgomery created the famous image that represented the United States government. The image first appeared on the cover of a magazine called "Leslie's Weekly" on July 6, 1916. The artist was inspired by another poster of 1914. It had the face of a British military officer in a very similar position as Uncle Sam's.