The social construction of race is illustrated by which of the following?
Group of answer choices
Many white Americans have unknown black ancestry.
Blacks and whites in most large U.S. cities continue to live in strongly segregated neighborhoods.
An olive-skinned Puerto Rican who would be categorized as "white" in Puerto Rico will be categorized as "black" when he immigrates to New York.
Most Americans continue to think that there are real and easily discernible differences among blacks and whites.