Which of the following is an example of a controlled act that nurses may perform?

Controlled acts are specific activities that can pose risks to the public if not performed by a qualified professional. In Ontario, the Regulated Health Professions Act outlines several controlled acts, which include actions that nurses may perform under certain conditions and training.

Administering a substance by injection or inhalation is classified as a controlled act because it involves delivering medication directly into a patient's body, which can have significant implications for safety and health. This act requires a nurse to have the appropriate training, knowledge, and skills to ensure that it is performed safely and effectively. Only qualified healthcare professionals are permitted to carry out this action, as it poses a greater risk of complications if done incorrectly.

In contrast, the other options involve activities that, while important for patient care, are not categorized as controlled acts in the same way. Conducting a health assessment is vital for understanding a patient's condition but does not carry the same inherent risks as performing an injection. Administering medication orally is typically considered a routine nursing task and does not require the same level of regulatory oversight. Providing patient education is also essential for promoting health and managing conditions but is not classified as a controlled act; it primarily involves teaching and counseling rather than the direct administration of substances.

Thus, the correct choice aligns