Question

1. possible risks associated with loss of hydro include: fire alarm system failure resident on oxygen issues elevator shutdown all of the above

Explanation:

Loss of hydro (water supply) can cause fire - alarm systems to fail as they may rely on water - based suppression or water - related components. For residents on oxygen, lack of water can affect humidification systems, causing issues. Also, elevator systems may shut down due to water - related safety mechanisms in case of water loss or water damage concerns.

Answer:

D. All of the above