Question

what geographic tool would best show the top three countries that send immigrants to the us in a certain year?

a bar graph that compares different us cities

a timeline of major immigration laws

a world map that highlights immigration routes

a pie chart that shows percentages by country

Explanation:

A pie - chart is ideal for showing proportions or percentages of a whole. Here, it can clearly display the percentage of immigrants from each country, making it easy to identify the top three countries sending immigrants to the US in a certain year. A bar - graph comparing US cities is not relevant as it focuses on cities, not countries. A timeline of immigration laws has nothing to do with showing the source countries of immigrants. A world map highlighting immigration routes shows the paths, not the proportion of immigrants from each country.

Answer:

D. a pie chart that shows percentages by country