The end of immigration quotas in the 1960s led to

a significant decrease in safe places for refugee immigrants.

a significant increase in discrimination against immigrants.

a significant increase in the number of Asian immigrants.

a significant decrease in the number of Asian immigrants.

The correct answer should be " a significant increase in discrimination against immigrants."

This is because when the quotas were abandoned, hundreds of thousands of immigrants came from Latin America and many other poorly developed countries which in turn increased increased discrimination due to their poverty and perceived lack education.