Answer:
Hurricanes
Explanation:
Hurricanes are the event most likely to be classified as unanticipated in the HRM enviroment.
This is because hurricanes are meteorological events that not even professional metereologists and climatologists can predict, let alone a HR manager. Hurricanes are complex systems (climate itself is a complex system) that can only be correctly predicted a few days before they actually come to be, when the tropical storms that are likely to become hurricanes already exist.
The other events are easier to predict: recessions because leading and lagging economic indicators can give clues with months in advance.
Employee retirments can be predicted using primary internal information, or even by simply surveying the employees.
Stock and bond market losses can be predicted with a variety of indexes, and other economic data, that comes out daily in many publications, and that can also be obtained through primary means.
