Answer:
The student starts to mark the time on the IV bag with a permanent marker.
Explanation:
The key word in the question is "should intervene". Intervention is only needed if there is a complication or if an action is capable of leading to a complication. From the options, the use of a permanent marker can contaminate the solution and hence the LPN/LVN must intervene and instruct the student nurse to use a time tape instead to mark the time.
