Final answer:
Nelly's resistance to the proposed changes in her workplace stem from her concern about the potential increased ambiguity and the impact on patient care.
Step-by-step explanation:
When Nelly, a technician at an ophthalmology office, expressed concerns over the proposed changes by the new clinic coordinator, Kelly, her resistance stems from a specific source. Nelly's resistance to change likely came from her concern about increased ambiguity. This is because she worried that the changes could lead to increased filing errors disturbing patient care, indicating her hesitation was not about fear of the change itself but the potential negative outcomes associated with the uncertainty of new procedures.