Final answer:
The Registrar can indeed require English language proficiency for applicants wanting to register with the CLPNA, as effective communication in healthcare is critical for patient safety.
Step-by-step explanation:
The statement that the Registrar may require an applicant who wants to register with the CLPNA (College of Licensed Practical Nurses of Alberta) to demonstrate English language proficiency is True. The CLPNA has set English language proficiency as one of the requirements for registration to ensure that all nurses are able to communicate effectively with patients, colleagues, and other healthcare providers. Thus, it is common practice for regulatory bodies in healthcare to mandate such standards to uphold the quality and safety of patient care.