The correct answer is A) there was prejudge against immigrants.
The Chinese Exclusion Act and the Dillingham report indicate about nativist reaction to immigration is that there was prejudge against immigrants.
The Chinese Exclusion Act was signed by President Chester A. Arthur on May 6, 1882. It prohibited migration of Chinese laborers. It was the first US that prohibited that prevented members of a specific nationality to enter the United States. The Dillingham Commission Report studied the effects of immigration in America and the impact of immigration in the culture, economic, political and social life of America. So yes, the Chinese Exclusion Act and the Dillingham report indicate about nativist reaction to immigration is that there was prejudge against immigrants.