Which one of the following choices is authorized by a government agency?

Licensure is the correct answer because it involves a government agency granting permission to individuals to practice a specific profession or occupation. This process typically includes meeting established educational requirements, passing examinations, and complying with ethical and professional standards set by the governing body. The ultimate goal of licensure is to protect public health and safety by ensuring that practitioners possess the necessary qualifications and skills to provide safe services.

In contrast, certification generally refers to a voluntary process by which an individual proves they have met certain predetermined qualifications or standards, often administered by professional organizations rather than a government entity. Registration, on the other hand, is simply the act of signing up with a relevant authority and does not necessarily involve the rigorous assessment that licensure does. The term 'practitioner' describes a professional who engages in practice but does not imply any specific authorization by a governmental body.