ASPECTS OF NATURALIZATION
THE PROCESS OF CITIZENSHIP
Answer: C. Passing an FBI background check.
From: United States Citizenship and Immigration Services (USCIS)
"USCIS conducts an investigation of the applicant upon his or her filing for naturalization. The investigation consists of certain criminal background and security checks."
Criminal records are always checked during naturalization. Investigators conduct a thorough check of all records in the country an applicant was previously residing in.