Final answer:
The correct ICD-10-PCS root operation for a tracheostomy is A) 'Creation', as it involves making a new opening into the trachea to establish an airway.
Step-by-step explanation:
The correct root operation term used in ICD-10-PCS for a tracheostomy is Creation. In the context of ICD-10-PCS (the International Classification of Diseases, 10th Revision, Procedure Coding System), a tracheostomy involves creating an opening into the trachea to establish an airway, which aligns with the definition of 'Creation' as it pertains to forming a new body part where none existed before or to separate or cut out a portion of a body part to make a new body part.