Nativists in the 1840s believed that immigrants had much in common with them. deserved better working conditions. could not fit into American society. should be better integrated into society.

B) Born or naturalized in the United States.

Explanation:

Amendment 14.  

All persons born or naturalized in the United States and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.