Which of these is a permissible activity for a dental hygienist with an initial limited license?

A dental hygienist with an initial limited license in Washington State is permitted to perform certain dental hygiene activities that are essential to their role and within the scope of their training. Taking intra-oral radiographs is one of the key responsibilities of a dental hygienist as it is vital for assessing a patient's oral health and diagnosing potential issues. This task falls under the scope of practice for hygienists, making it an authorized activity for someone holding an initial limited license.

On the other hand, activities such as creating orthotic devices, warranting dental diagnoses, or performing surgical procedures extend beyond the typical scope of a dental hygienist's practice. Creating orthotic devices often requires additional training and licensure that goes beyond what is provided for dental hygienists. Warranting dental diagnoses typically falls under the dentist's purview, as diagnoses require comprehensive training that dental hygienists do not possess. Likewise, performing surgical procedures is also not within the legal scope of practice for dental hygienists, as these tasks are reserved for licensed dentists who have the requisite training and experience. Therefore, the correct answer reflects a safe and legally sanctioned activity for a dental hygienist operating under a limited license.