What emblem is in the center of the great seal of the U.S.?

The great seal of the United States features an eagle at its center, specifically the American bald eagle, which is a symbol of freedom and strength. This choice reflects the importance of the eagle in American symbolism, as it represents the nation's independence and its commitment to liberty. The eagle is shown holding a ribbon in its beak that reads "E pluribus unum," which translates to "Out of many, one," alluding to the unity of the various states. Additionally, the eagle clutches arrows in one talon and an olive branch in the other, symbolizing the country's willingness to go to war when necessary, but also its desire for peace.

The other choices, while significant in their own right, do not serve as the central emblem of the great seal. The shield is part of the eagle's depiction and complements its imagery rather than standing alone as the primary emblem. A star and a flag are also important symbols in American iconography, but they do not occupy the central position in the great seal. The eagle's prominent place directly conveys a powerful message about the nation's ideals and identity.