Which country represents that largest number of immigrants in the U. S.

The qeustion is asking what country has the most immigrants.

According to the United Nations, in 2019, the United States, Germany, and Saudi Arabia had the largest number of immigrants of any country, while Tuvalu, Saint Helena, and Tokelau had the lowest.

Explanation:

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d. china

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d is the best choice

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)