If certified in another state, which additional requirement is false when applying for TX certification?

The requirement that the candidate must pass the TX assessment exam is indeed not necessary if they are already certified in another state. Texas allows individuals who are certified as EMTs in other states to obtain Texas certification through an endorsement process, which typically does not require them to take the state-specific assessment exam if they meet all other criteria.

In contrast, fingerprint background checks are mandatory for all applicants to ensure the safety and security of patients and the public, while completion of a jurisprudence exam is required to ensure that the applicant understands Texas's laws and regulations regarding emergency medical services. The NREMT exam requirement is generally in place to confirm the candidate's competence in emergency medical services, as certification through the National Registry of Emergency Medical Technicians is a prerequisite for state certification in Texas for individuals coming from outside the state. Thus, option A stands out as not being a requirement under the circumstances outlined in the question.