Asians were perceived as threats to White labor and, because scientific racism prevailed, as culturally and biologically inferior. Many Whites thought they would cause the degeneration of the "superior" White race through miscegenation (interracial marriage). These fears of a "Yellow Peril," assisted in implementing what U.S. policy?
a. the Immigration Act
b. the Pensionado Act
c. the Johnson-Reed Act
d. the Chinese Exclusion Act