Final answer:
Drug-drug interaction checks (option 1) in CPOE systems are considered advanced functionality because they use clinical decision support systems to prevent harmful medication interactions, while other options listed are standard functionalities.
Step-by-step explanation:
The question asks which CPOE function is considered advanced functionality. CPOE, or Computerized Physician Order Entry, is a system that allows health care practitioners to enter medical orders electronically. Among the options provided, drug-drug interaction checks are often considered an advanced functionality.
This feature goes beyond basic order entry and processing; it includes sophisticated clinical decision support systems (CDSS) to analyze and warn healthcare providers about potential medication interactions that could harm patients. In contrast, options such as transmitting the order to the appropriate location, returning the status of the order, or returning the results of order execution are considered standard functionalities of CPOE systems.
Hence, the correct answer is Option 1.