Answer:
testing contact numbers periodically
Explanation:
That makes most sense to me because calling their doctor serves no purpose, printing out weekly spreadsheet is waste of paper, and making sure one staff has training does not fit the question I think.
It is called rationalization
I believe the answer you are looking for is "case study"
A case study is a publication of an experience conducted over an amount of time. It could be based on behavior for each or a group.
<span>Bacterial infections are common and are best treated with antiviral medications.
Hope this helped!</span>
