The addition of the Roosevelt Corollary to the Monroe Doctrine change the perception of the United States around the world is with A. The corollary showed the world that the United States is a force on the world front that cannot be ignored.
The Monroe Doctrine already established the US as a major player because It declared that the Western Hemisphere was off-limits to further European colonization.
The Roosevelt Corollary added an assertive dimension because It stated that the US would intervene in Latin American affairs to prevent European involvement, even if it meant using military force.
Therefore, the Roosevelt Corollary's impact on the perception of the US was predominantly about **showing strength and asserting its position as a major force on the global stage.